Question

3. Suppose there are successive discounts
of 10% and 20% on the following items.
Find the marked price of each item when
the selling price is given.
a) Mobile phone: 9000​

Answer 1

Step-by-step explanation:

• S.P= M.P x (100–10/100 x(100–20)/100
• S.P= M.P x 0.9 x 0.8
• So M.P= 5760/(0.9 x0.8)
• = 8000.
• When two successive discounts of 10% and 20% are given, it amounts to 28% of a single discount. Because
• (100–10)/100 x (100- 20)/100
• = 0.9 x 0.8= 0.72. So on allowing two successive discounts of 10% and 20% the sale price decreases to 72% .
• It is equivalent to (100–72)= 28% of a single discount. OK.