Question

a man bought 120 pens for rs.7200. he sold 40 pens at rs. 70 each and 60 pens at rs.80 each. at what price should he sell the remaining pens so as to make a profit of 20% in total investment.​

Answer 1

rs. 52

Explanation:

40(70) + 60(80) + 20x = 7200(1.2)

2800 + 4800 + 20x = 8640

7600 + 20x = 8640

20x = 1040

x = 52