Total no. of apples in the box =50
Cost price of 50 apples = ₹400
Selling price of one apple = ₹ 10
Selling price of 50 apples = 10×50 = ₹ 500
(1 mark)
Since, S.P.>C.P. this is a profit. (1 mark)
Profit %=S.P.−C.P.C.P. ×100
=500−400400×100
=25% (1 mark)