Q12 of 32 Page 46

If I get ₹1200 return as amount (principal along with interest) by depositing ₹800in the bankat the rate of simple interest of 10% per annum, then let us write by calculating, the time for which the money was deposited in the bank.

Interest = Amount – Principal


⇒ Interest = Rs. 1200 – Rs. 800


⇒ Interest = Rs. 400


P = Rs. 800, r = 10, t = ? and I = Rs. 400


As we know,





Hence, for 5 yr money was deposited in the bank.


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