Question

26) A machine was sold at a gain of 10%. Had it
been sold at Rs 80 less, the seller would have
lost 10%. What is the cost price of the machine.​

Answer 1

Answer:

CP=400

Step-by-step explanation:

Let CP is 100%

A machine was sold at a gain of 10%

SP1=100%+10%

   =110%

Had it  been sold at Rs 80 less, the seller would have  lost 10%

SP2=100-loss%

   =100%-10%

   =90%

Difference of SP1 and SP2 is

110%-90%=20%

This difference obtained by selling 80 rupees less

20%=80

100%=400 is CP