Question

a shopkeeper buys some pens at 3 for 30 rupees and an equal number at 4 for rupees 48 he sells them at 5 for rupees 56 find his gain or loss percent​

Answer 1

Answer:

It can be best solved by taking an example. Let's take an LCM of 2,3,4,5 = 120

So he buys 60 pens at 3 for 30 that means 60 for 600. He buys the rest 60 at 4 for 48 that means 60 for 720. So the total cost of 120 pens is 1320.

He sells 120 pens at 5 for 56 that means 120 for 1344.

CP= 1320

SP= 1344

Profit= 1344 - 1320 = 24

Profit % = (24/1320) × 100 = 1.82 %

hope it helps you :)