Question

(1) The marked price of a D.V.D is 4400. After allowing a discount of 10% the shopkeeper still makes a
profit of 10%. Find the cost price of the D.V.D.
(2) Find a single discount equal to successive discounts of 20% and 10%.
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Answer 1

Step-by-step explanation:

(1) M.P.= ₹4400

Discount%= 10%

Profit%= 10%

First we have to find discount

Discount = M.P.× Discount%

100

= 4400 × 10

100

= ₹440

Hence, S.P. of DVD = M.P. - Discount

= 4400 - 440

= ₹3960

Profit% = 10%

C.P. = 100 × S.P.

(100+Profit%)

= 100 × 3960

( 100+10)

= 100 × 3960

110

= ₹3600