Question

7. Find the rate of discount on a book whose marked price is ₹210 and the selling price is ₹126. A) 20% B) 30% C) 40% D) 50% ​

Answer 1

Solution

Marked Price (MP) = ₹210

Selling Price (SP) = ₹126

Discount = MP - SP

Discount = ₹210 - ₹126

Discount = ₹84

$\sf{Discount\%=\dfrac{discount}{MP}×100}$

$\sf{ = \dfrac{84}{210}\times100}$

$\sf{ = \dfrac{84}{21} \times 10}$

$\sf{ = 4 \times 10}$

$\sf{ = 40\%}$

Therefore, rate of discount on the book is 40%(option C).

Hence, solved!! ✓.

Additional Information

SP = MP - discount

MP = SP + discount.

Answer 2

SOLUTION

TO CHOOSE THE CORRECT OPTION

Find the rate of discount on a book whose marked price is ₹210 and the selling price is ₹126.

A) 20%

B) 30%

C) 40%

D) 50%

EVALUATION

Here by the given ,

Marked price = ₹ 210

Selling price = ₹ 126

Discount Amount

= ₹ 210 - ₹ 126

= ₹ 84

Hence the required discount percentage

$\displaystyle \sf{ = \frac{84}{210} \times 100\% }$

$\displaystyle \sf{ = 40\% }$

FINAL ANSWER

Hence the correct option is C) 40%

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