CSC Company Numerical Ability Simple & Compound Interest

The simple interest and the true discount on a certain sum for a given time and at a given rate are Rs. 85 and Rs. 80 respectively. The sum is:

A. Rs. 1800 B. Rs. 1450
C. Rs. 1360 D. Rs. 6800

Read Solution (Total 2)

sum=si*td/(si-td)
sum=80*85/(85-80)
sum=1360
12 years agoHelpfull: Yes(14) No(2)

sum=si*td/si-td... so 80*85/5=1350
12 years agoHelpfull: Yes(12) No(8)

CSC Other Question

The present worth of Rs. 1404 due in two equal half-yearly installments at 8% per annum simple interest is:

A. Rs. 1325 B. Rs. 1300
C. Rs. 1350 D. Rs. 1500 Rs. 20 is the true discount on Rs. 260 due after a certain time. What will be the true discount on the same sum due after half of the former time, the rate of interest being the same?

A. Rs. 10 B. Rs. 10.40
C. Rs. 15.20 D. Rs. 13