Question

A bookseller sold a book for ₹ 100 and thereby gains ₹ 20. Find his gain per cent.
(a) 20% (b) 25% (c) 40% (d) none of these

Answer 1

Answer:

ANSWER

25%

SOLUTION

Selling Price = Rs 100

Profit = Rs 20

Cost Price = SP - Profit = 100-20

Thus, Profit % = PROFIT/Cp ×100

=20/80×100

=25%

MARK ME BRAINLIEST ✌✌✌✌

Answer 2

$\bold\purple{\boxed{ANSWER=>25\%}}$

GIVEN

The selling price of book=Rs.100

The gain on book=Rs.20

FIND-The cost price of book and gain%

• by using formula here

The cost price of book=Sp-gain

=100-20=>Rs.80

$\bold\purple{\boxed{Gain\%=\dfrac{100*G}{CP}}}$

$⟶gain\% = \frac{100 \times 20}{80} \\ \\ ⟶gain\% = \frac{2000}{80} \\ \\ ⟶gain\% = 25\%$

HENCE,

The book seller will gain of 25% on book