Question

Q.(32) A milkman sold two of his buffaloes for ₹ 20,000 each. On one he made a gain of 5% and on the

other a loss of 10%. Find his overall gain or loss. (Hint: find CP of each) (5)

Or

Calculate the amount and compound interest on:

(a) ₹ 10,800 for 3 years at 12 % per annum compounded annually.

(b) ₹ 8000 for 1 year at 9% per annum compounded half yearly.

Q.(33) Find the least number which must be added to 2581 so as get a perfect square. Also find the

square root of the perfect square obtained?​

Answer 1

Sp of buffalo1 = Rs 20,000

Gain =5%

So, Cost price of buffalo1 =

105

100

×20,000= Rs. 19047.62

SP of buffalo2 = Rs 20,000

Loss =10%

Cost price of buffalo2 =

90

100

×20,000= Rs 22,222.22

Total Cost price = Rs 41269.84

Total selling price = Rs 40,000

Loss = Rs 1269.84