Question

A certain number of articles are bought at 3 for 150
and all of them are sold at 4 for 180. Find the loss or
gain per cent.​

Answer 1

Answer:

L.C.M. of 3 and 4 = 12

Let 12 articles are bought

∴ C.P. of 12 articles = Rs. (150 × 12)/3

= Rs.600

And S.P. of 12 articles = Rs. (180 × 12)/4

= Rs. 540

Loss = C.P. – S.P.

=Rs. 600 – Rs. 540

= Rs. 60

Loss % = (Loss × 100)/C.P.

= (60 × 100)/600

= 10%