﻿ Quantitative aptitude Question for all banking Bank PO,Clerk,IBPS PO,Railway,SSC,PSUs,IAS,OAS ,C-SAT Exams ﻿

### Mathmetics

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

##### A person invested Rs.5000 for two years. For the first year, the rate of interest was 7% and the second year it was 8.5%. How much interest did he earn at the end of the two year period ?
 1) Rs.805.75 2) Rs.804.75 3) Rs.810 4) Rs.850 5) None of these
Explanation :
Interest at the end of the first year + Interest at the end of the second year
= Total interest at the end of the two year period is
= ( 5000 x 1 x7) /100 + (5350 x 1 x 8.5 ) /100 = 350 + 454.75 = Rs. 804.75
##### If the interest on Rs. 800 be more than the interest on Rs. 400 by Rs. 40 in 2 years, then the rate of interest per annum is :
 1) 5% 2) 6% 3) 5.5% 4) 7% 5) None of these
##### A sum fetched a total simple interest of Rs. 4016.25 at the rate of 9 p.c.p.a. in 5 years. What is the sum ?
 1) Rs. 4462.50 2) Rs. 8032.50 3) Rs. 8900 4) Rs. 8925 5) None of these
Explanation :
Principal = (100 x 4016.25 ) / ( 9 x 5) = Rs. 8925.

##### A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:
 1) Rs. 650 2) Rs. 690 3) Rs. 698 4) Rs. 700 5) None of these
Explanation :
S.I. for 1 year = Rs. (854 - 815) = Rs. 39.
S.I. for 3 years = Rs.(39 x 3) = Rs. 117.
Principal = Rs. (815 - 117) = Rs. 698.
##### A sum of Rs. 1550 is lent out into two parts, one at 8% and another one at 6%. If the total annual income is Rs. 106, find the money lent at each rate ?
 1) Rs. 800 2) Rs. 900 3) Rs. 1100 4) Rs. 870 5) None of these
Explanation :
Let the sum lent at 8% be Rs. x and that at 6% be
Rs. (1550 - x).
or (X x 8 x 1/100 ) + [ {(1500- X) x 6 x 1}/ 100 ] = 106
or 8 x + 9300 - 6 x = 10600
or 2 x = 1300
or x = 650
Money lent at 8% = Rs.650.
Money lent at 6% = Rs(1550 - 650) = Rs. 900