Question

The difference between a discount of 35% and two successive discounts of 20% on a certain bill was Rs. 22. Find the amount of the bill.

• A. Rs. 200
• B. Rs. 1100
• C. Data inadequate
• D. Rs.350
• E. None of these

Answer 1

The correct option is E

None of these

Let the amount of the bill be Rs.x.then,

(65% of x)-(80% of 80% of x)=22

$\Rightarrow \left(\frac{65}{100}\times x\right)-\left(\frac{80}{100}\times \frac{80}{100}\times x\right)=22$

$\Rightarrow \frac{65}{100}x-\frac{64}{100}x=22\Rightarrow \frac{x}{100}=22,x=2200.$