Question

ramesh bought 2 boxes for Rs 1300 . if he sold one box at a profit of 20 percent and the other at a loss of 12 percent . if the selling price of the boxes are same find their cost price.
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Answer 1

Answer:

550 and 750

Step-by-step explanation:

if cp of first box is ₹100

(later on we multiply by 6.5)

one box was sold at ₹120(or 120*6.5=780)

other box was also sold at ₹120 which is 12%loss

so loss*100/cp=12%

or (cp-sp)*100/cp=12%

1-(sp/cp)=0.12

sp/cp=0.88

120/cp=0.88

cp=120/0.88

=136.36

Now ratio of cost prices

=136.36:100

so 2 boxes were bo't at

136.36+100=236.36

But if total was ₹1300

cost prices were

1300/236.36)*136.36

=5.5*136.36=750

and

(1300/236.36)*100

=5.5*100=550