Question

A shopkeeper sold a laptop at gain of 20% had it been sold for RS 1,000 more that gain would have been 25% find the CP of the laptop​

Answer 1

A shopkeeper sold a laptop at gain of 20% had it been sold for Rs 1,000 more then 25 % Gain  The CP of the laptop​ = Rs 20000

Step-by-step explanation:

Let say cost Price of the Laptop = 100C   Rs

Gain of 20 % = (20/100)100C = 20C   Rs

Selling Price = 100C + 20C = 120C  Rs

if Sold at RS 1000 More than

Selling Price = 120C + 1000 Rs

Gain = 120C + 1000 - 100C

=> Gain = 20C + 1000

Gain = 25 %

=> (25/100) * 100C = 20C + 1000

=> 25C = 20C + 1000

=> 5C = 1000

=> C = 200

Cost Price of Laptop = 100C = 100 * 200  = Rs 20000