Question

A sells a radio to B at a loss of 20%, B sells it to C at a loss of 30% and C sells it to D at a loss of 10%. If A pays ₹ 2000, then the Cost Price for D is :

• A. ₹ 1500
• B. ₹ 1008
• C. ₹ 948
• D. ₹ 1200

Answer 1

The correct option is B

₹ 1008

We can solve this problem using the method of Successive values instead of calculating one by one.

CP for D =
$=2000\times (1-\frac{20}{100})\times (1-\frac{30}{100})\times (1-\frac{10}{100})$

= 2000 $\times \frac{80}{100}\times \frac{70}{100}\times \frac{90}{100}$

= ₹ 1008