Question

A vendor bought chocolates at 6 for a rupee. How many for a rupee must he sell to gain 20%?

Answer 1

Hey Friend ☺

Cost price = Rs 6

Profit ( % ) = 20

Total profit = 20 % of 6

= 20/100 × 6

= 1/5 × 6

= 6/5

= 1.2

selling price = cost price + profit

= 6 + 1.2

= Rs 7.2

So the selling price o the pen is Rs 7.2

Hope it helps you ..!!

✌

Answer 2

hye

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A vendor bought chocolates at 6 for a rupee.

=> cost price = 6 rs

we must find what is the s.p of chocolates,so that he must gain 20%

so lets recall a formula for finding s.p when gain % is given 

=>$\frac{cost price*100+profit}{100}$

so lets apply the same formula here 

which is 

=>$\frac{6*100+20}{100}$

=>$\frac{6*120}{100}$

=> 7 . 2 rupees

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hope it helps