Question

For how long must i leave 400 naira in a bank to earn an interest of 58 naira the rate being 3 percent

Answer 1

First take away 58 from 400 which is 342 now out of the total that’s 400 put 342 over 400 and simplified is 0.855 basically 5% by calculations now 3% of 400 is 12 so it’s 12 over 400 now 5% of 400 is 20 and 20-12 is 8 so leave 8 naira in the bank