Question

If oranges are bought at the rate of 15
oranges for 100 rupees, how many must be sold for 100 rupees so as to gain 25%?​

Answer 1

Oranges are bought at 5 for Rs.10

Cost of 5 oranges is Rs.10

So,cost of one orange =

5

10

=Rs.2

So the cost of 6 oranges=2×6=Rs.12

Cost of 6 oranges is Rs.12

Cost price=c.p=12

Selling Price=s.p=15

so profit =s.p−c.p=15−12=Rs.3

profit %=

C.P

profit×100

=

12

3×100

=25%

∴the profit % is 25%

Answer 2

Answer:

He should sell all the 15 oranges for ₹ 125 to gain 25%.

Selling price of each orange is 25/3.

If he sells 12 oranges he will get 12*25/3

=₹ 100

n = 1500/125 = 12

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