WBCS Mains 2019 Official Paper-VI

Ten copies of the book can be bought for a certain sum of money payable at the end of $2$ years. $12$ copies of the same book can be bought for the same sum in ready cash. What is the rate of interest per annum?

Sita deposited some money in a bank at the rate of simple interest of $5.25\%$ per annum. After $2$ years, she has got Rs. $840$ as interest. Calculate the money she has deposited into the bank.

Calculate the number of years for which the interest of Rs. $600$ at the rate of simple interest of $8\%$ per annum will be Rs. $168$.

At the same rate of simple interest per annum, if a principal becomes the amount of Rs. $7100$ in $7$ years and of Rs. $6200$ in $4$ years, determine the principal amount.

A weaver cooperative society takes a loan of Rs. $15,000$ for buying a power loom. After $5$ years, the society has to repay Rs. $22,125$ for recovering the loan. Find the rate of simple interest per annum.