Question

a dealer of scientific instrument allows 40% discount on the market price of the instruments and still marks a profit of 20% if his gain our the sale of instrument is rupees 300 find the market price of the instrument

Answer 1

Proft = 20% = 300

CP = x

300/x  x 100 = 20

x = 30000/20 = 1500

Then SP = 1500 + 300 = 1800

Discount = 40%

MP = y = 60%

1800/y  x  100= 60

x = 180000/60 = 3000

So MP = 3000