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Mathmetics

ISBT Mathmetics for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams

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Q351.

What would be the compound interest obtained on an amount of Rs.4400 at the rate of 10% p.a. after 2 years ?

1)	Rs. 886	2)	Rs.910
3)	Rs.924	4)	Rs. 954
5)	None of these

Answer : Rs.910
Explanation :

Amount = 4400 ( 1+10/100)² = 5324

Therefore,CI = 5324 - 4400 = 924

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Q352.

Rs. 3757 is to be divided between A and B such that A�s share at the end of 7 years may be equal to B�s share at the end of 9 years. If rate percent be 10% p.a. compound Interset, B�s share is -

1)	Rs. 1700	2)	Rs. 1500
3)	Rs. 2057	4)	Rs. 1400
5)	None of these

Answer : Rs. 1700

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Q353.

If the simple interest on a sum of money for 2 years at 5% p.a. is Rs. 50. What is the compound interest on the same sum at the same rate and for the same time ?

1)	Rs. 54.25	2)	Rs. 52
3)	Rs. 51.25	4)	Rs. 60.50
5)	None of these

Answer : Rs. 51.25

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Q354.

A freight train left, Bhubaneswar for Chennai at an average speed of 40 km/hr. Two hours later, an express train left Bhubaneswar for Chennai following the freight train on a parallel track at an average speed of 60 km/hr. How far from Delhi would the express train meet the freight train ?

1)	220km	2)	240km
3)	250 km	4)	260 km
5)	None of these

Answer : 240km
Explanation : The first train after 2hours covers a distance 40 x 2 = 80 kms.

Then, the second train starts and time for both trains is same .

According to relative speed formula, the relative speed in same direction = 60 - 40 =20kmph

So, time taken to cover the 80km = 80/20= 4 hrs

Therefore, the total distance = 60 x 4 = 240kms.

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Q355.

Directions: In a survey of a locality,the number of male adults and female non-adults in 30 each.
The number of female adults and male non adults in 20 each. Every female adult is well versed in at least one of the two languages - Hindi and English. Every male non adu1t is well-versed with at least one of the two languages - Hindi and English. There are 7 male adults and 8 female non-adults do not know any of the two languages. There are10 male non-adults and 18 female adults are well versed in both the languages. There are 20 male adults and 17 female non-adults are well versed in only one of the two languages.

Based on the information given above answer the next four items:

What is the number of persons who can talk to each other both the languages ?

1)	25	2)	36
3)	42	4)	Can't be determined
5)	None of these

Answer : 36

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Q356.

Directions: In a survey of a locality,the number of male adults and female non-adults in 30 each.
The number of female adults and male non adults in 20 each. Every female adult is well versed in at least one of the two languages - Hindi and English. Every male non adu1t is well-versed with at least one of the two languages - Hindi and English. There are 7 male adults and 8 female non-adults do not know any of the two languages. There are10 male non-adults and 18 female adults are well versed in both the languages. There are 20 male adults and 17 female non-adults are well versed in only one of the two languages.

Based on the information given above answer the next four items:

What is the number of non adults who are well versed in at least one of the two languages ?

1)	24	2)	28
3)	42	4)	Can't be determined
5)	None of these

Answer : 42

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Q357.

Directions: In a survey of a locality,the number of male adults and female non-adults in 30 each.
The number of female adults and male non adults in 20 each. Every female adult is well versed in at least one of the two languages - Hindi and English. Every male non adult is well-versed with at least one of the two languages - Hindi and English. There are 7 male adults and 8 female non-adults do not know any of the two languages. There are10 male non-adults and 18 female adults are well versed in both the languages. There are 20 male adults and 17 female non-adults are well versed in only one of the two languages.

Based on the information given above answer the next four items:

What is the number of males who are well-versed in Hindi only ?

1)	10	2)	20
3)	32	4)	Can't be determined
5)	None of these

Answer : Can't be determined

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Q358.

Directions: In a survey of a locality,the number of male adults and female non-adults in 30 each.
The number of female adults and male non adults in 20 each. Every female adult is well versed in at least one of the two languages - Hindi and English. Every male non adu1t is well-versed with at least one of the two languages - Hindi and English. There are 7 male adults and 8 female non-adults do not know any of the two languages. There are10 male non-adults and 18 female adults are well versed in both the languages. There are 20 male adults and 17 female non-adults are well versed in only one of the two languages.

Based on the information given above answer the next four items:

What is the number of females who are well-versed in both the languages ?

1)	20	2)	22
3)	23	4)	Can't be determined
5)	None of these

Answer : 23

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Q359.

In an examination, a student's average marks were 63. If he had obtained 20 more marks for his Mathematics and 2 more marks for his Geography, his average would have been 65. How many subjects were there in the examination ?

1)	8	2)	10
3)	11	4)	14
5)	None of these

Answer : 11
Explanation :

Let, the number of subjects = x

Then, Total marks he scored for all subjects = 63x

If he had obtained 20 more marks for his mathematics and 2 more marks for his geography, his average would have been 65.

=> Total marks he would have scored for all subjects = 65x

Now, we can form the equation as 65x - 63x = the additional marks of the student

= 20 + 2 = 22

=> 2x = 22

=>x=22/2=11

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Q360.

A batsman makes a score of 96 runs in the 16th innings and thus increases his averages by 2. What is his average runs after 16th innings ?

1)	62	2)	64
3)	66	4)	72
5)	None of these

Answer : 66
Explanation :

Let, the average up to 15th innings = x.

Total runs scored in 15 innings = 15x

Then average after 16 innings = (x+2).

Total runs scored in 16 innings = (15x + 96)

So, (15x + 96)/16 = (x+2)

=> 15x + 96 = 16x + 32

=> x = 64

Therefore, his average run after 16th innings is 64+2= 66 runs.

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Mathmetics

Q351.

What would be the compound interest obtained on an amount of Rs.4400 at the rate of 10% p.a. after 2 years ?

Q352.

Rs. 3757 is to be divided between A and B such that A�s share at the end of 7 years may be equal to B�s share at the end of 9 years. If rate percent be 10% p.a. compound Interset, B�s share is -

Q353.

If the simple interest on a sum of money for 2 years at 5% p.a. is Rs. 50. What is the compound interest on the same sum at the same rate and for the same time ?

Q354.

A freight train left, Bhubaneswar for Chennai at an average speed of 40 km/hr. Two hours later, an express train left Bhubaneswar for Chennai following the freight train on a parallel track at an average speed of 60 km/hr. How far from Delhi would the express train meet the freight train ?

Q355.

Q356.

Q357.

Q358.

Q359.

In an examination, a student's average marks were 63. If he had obtained 20 more marks for his Mathematics and 2 more marks for his Geography, his average would have been 65. How many subjects were there in the examination ?

Q360.

A batsman makes a score of 96 runs in the 16th innings and thus increases his averages by 2. What is his average runs after 16th innings ?

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