Question

Ankush sells two laptops for INR 42000 each. If he makes a loss of 20% on one of his laptops and a profit of 20% on the other one, find the total loss or profit percentage in this transaction. Mark for Review

Answer 1

Step-by-step explanation:

solution - For first laptop

sp - 42000

loss% - 20

so we need cost price

CP -( 100/100-20 ) ×sp

CP - 52500

similarly

solution - for other laptop

sp - 42000

profit% - 20

cp - ?

CP - ( 100/100+20 )×sp

CP - 35000

total cp we have calculated is 52500+35000

= 87500

total sp will be 42000×2 = 84000

therefore total SP is less than total CP

so we need to calculate loss

loss = CP - SP

loss = 87500 - 84000

loss = 3500

now we will find loss%

loss% = ( loss/Cp )×100

3500/87500 × 100

after solving we get 4

and 4% loss is our answer

hope you get it

here is the simplest method

if a person sells two similar articles at gain% of X and other is loss% of X

so you can calculate by this method

= x × x ÷ 100

= 20 × 20 ÷ 100

= 4 answer