Question

* 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 +9,000
b) DVD player 1,440
c) monitor 5,040
d) pen drive *720
on​

Answer 1

The marked price of each item when the selling price is given as

a) mobile phone +9,000 is Rs. 12500

b) DVD player 1,440 is Rs. 2000

c) monitor 5,040 is Rs. 7000

d) pen drive *720 is Rs. 1000

Step-by-step explanation:

Let the Marked Price for each of the items be Rs. “x”.

Two successive discounts are given as 10% & 20%.

Required formulas:

Selling price = Marked Price – [Discount% of Marked Price] = Marked Price * [1 – (Discount/100)]

Now, based on the above formula the marked price for each of the items are solved below:

Case (a):

Selling price of the mobile phone = Rs. 9000

∴ x * $\frac{90}{100} * \frac{80}{100}$ = 9000

⇒ x = $\frac{9000 * 10 * 10}{9 * 8}$

⇒ x = Rs. 12500

Thus, the marked price of the mobile phone is Rs. 12500.

Case (b):

Selling price of the DVD player = Rs. 1440

∴ x * $\frac{90}{100} * \frac{80}{100}$ = 1440

⇒ x = $\frac{1440 * 10 * 10}{9 * 8}$

⇒ x = Rs. 2000

Thus, the marked price of the DVD player is Rs. 2000.

Case (c):

Selling price of the monitor = Rs. 5040

∴ x * $\frac{90}{100} * \frac{80}{100}$ = 5040

⇒ x = $\frac{5040 * 10 * 10}{9 * 8}$

⇒ x = Rs. 7000

Thus, the marked price of the monitor is Rs. 7000.

Case (d):

Selling price of the pen drive = Rs. 720

∴ x * $\frac{90}{100} * \frac{80}{100}$ = 720

⇒ x = $\frac{720 * 10 * 10}{9 * 8}$

⇒ x = Rs. 1000

Thus, the marked price of the pen drive is Rs. 1000.

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Answer 2

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