Question

A man sells a speaker for Rs. 7500 at a profit of 20% and another speaker for Rs. 8100 a loss of 10%. Find his total loss or profit. Ans Profit 220​

Answer 1

Answer:

Profit =350

First speaker C.P=

$\boxed{ \sf \: 7500 \times ( \frac{100}{100 + 20} )}$

$\sf \: 75000 \times \frac{100}{120}$

$= 6250$

$\sf \: Profit =7500-6250=1250$

Cost of second speaker

$8100 \times ( \frac{100}{100 - 10} )$

$\sf \: 8100 \times \frac{100}{90}$

$= 9000$

$\sf \: Loss= 9000-8100=900$

$\sf \: So \: Profit=1250-900=350$