Question

A man buys 100 items at rupees 20 per item and sell 40 %of item at rupees 21 per item and rest 60 %at rupees 16 per item. Find gain or loss per cent

Answer 1

100 * 20 = 2000 This is cost price

40 * 21 = 840

Gain on 40% = rs 40

60 * 16 = 960

Los on 60% = 1200 - 960 = 240

So Net Loss = 240 - 40 = rs 200

Loss % is 200/2000= 10%

Answer 2

coast of 100 item= 2000

now
40% =40
40×21=840
60%=60
60×16=960

so now
840+960=1800
200 loss

200 =10% of 2000
now answer is 10 % of loss