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)

S.P. of each buffalo = ₹ 20,000
S.P. of two buffaloes = ₹ 20,000 x 2 = ₹ 40,000
One buffalo is sold at 5% gain.
Let C.P. be ₹ 100, then S.P. = 100 + 5 = ₹105
∵ When S.P. is ₹ 105, then C.P. = ₹ 100
∴ When S.P. is ₹ 1, then C.P. = 100/105
∴ When S.P. is ₹ 20,000, then C.P. = 100/105 x 20000 = ₹ 19,047.62
Another buffalo is sold at 10% loss.
Let C.P. be ₹ 100, then S.P. = 100 – 10 = ₹ 90
∵ When S.P. is ₹ 90, then C.P. = ₹ 100
∴ When S.P. is ₹ 1, then C.P. = 100/90
∴ When S.P. is ₹ 20,000, then C.P. = 100/90×20000 = ₹ 22,222.22
Total C.P. = ₹ 19,047.62 + ₹ 22,222.22 = ₹ 41,269.84
Since C.P. > S.P. Therefore here it is loss.
Loss = C.P. – S.P. = ₹ 41,269.84 – ₹ 40,000.00 = ₹ 1,269.84

Class 8 Maths Chapter 8 Exercise 8.2 Solution in Video

Class 8 Maths Chapter 8 Exercise 8.2 Solution in Video