Mathmetics

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

Q11.	The sum of three numbers is 98. If the ratio of the first to second is 2 :3 and that of the second to the third is 5 : 8, then what is the second number ?

1)	20	2)	30
3)	48	4)	58
5)	None of these

Q12.	The sum of three numbers is 98. If the ratio of the first to second is 2 :3 and that of the second to the third is 5 : 8, then what is the second number ?

1)	20	2)	30
3)	48	4)	58
5)	None of these

Q13.	If A: B  = 5 : 6  and  B : C = 4: 5 , then A: C  is equal to -

1)	2:3	2)	4:5
3)	3:4	4)	6:7
5)	None of these

Q14.	Salaries of A and B are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000, the new ratio becomes 40 : 57. What is B's salary ?

1)	Rs.17,000	2)	Rs.20,000
3)	Rs.25,500	4)	Rs.38,000
5)	None of these

Q15.	In a mixture of 60 liters, the ratio of milk and water 2 : 1. How many liters of water must  be added in to the mixture so that the ratio became 1 : 2 ?

1)	20 litres	2)	30 litres
3)	40 litres	4)	60 litres
5)	None of these

Q16.	Two numbers are respectively 20% and 50% more than a third number. What is the ratio of the two numbers ?

1)	2 : 5	2)	3 : 5
3)	4 : 5	4)	6 : 7
5)	None of these

Q17.	The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio ?

1)	8 : 9	2)	17 : 18
3)	21 : 22	4)	Can't be determined
5)	None of these

Q18.	The monthly income of Mohan and suresh are in the ratio of 6:5 and their monthly expenditures are in the ratio of 11:8. If each of them saves Rs. 5,200 per month, then what is the diffrence in the monthly incomes of Mohan and Suresh ?

1)	Rs.750	2)	Rs.2,250
3)	Rs.6,000	4)	Rs.8,250
5)	Rs. 11,250

Q19.	A sum of money is to be distributed among A, B, C, in the proportion of 5 : 2 : 4 . If C gets Rs. 600 less than A, what is B's share ?

1)	Rs. 400	2)	Rs. 800
3)	Rs. 1200	4)	Rs.1000
5)	None of these

Q20.	A and B together have Rs. 1200. If the ratio of A's amount to B's amount is 3:5 , how much amount does B have?

1)	Rs. 250	2)	Rs. 450
3)	Rs. 600	4)	Rs. 750
5)	None of these