Question

mike bought a smartphone during a fair at a discount of 30% on the usual price. the discount was $126.

what was the usual price of the smartphone ? :)

MATHS

Answer 1

289 is the usual price
Formula
Discount + discount percentage

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Answer 2

Answer:

Required the usual price of the smartphone was 180 rupees.

Explanation:

Given,mike bought a smartphone during a fair at a discount of 30% on the usual price.

Let,the usual price of the smartphone be x rupees.

It is given that Mike gets 30% discount on x rupees.

We know,

a% discount on b $= \frac{100 - a}{100} \times b$

For example,

5% discount on 100 rupees

$= \frac{100 - 5}{100} \times 100 \\ \frac{95}{100} \times 100 \\ = 95 \: rupees$

and 50% discount on 500 rupees

$= \frac{100 - 50}{100} \times 500 \\ = \frac{50}{100} \times 500 \\ = 50 \times 5 \: rupees \\ = 250 \: rupees$

Here 30% discount on the x is equal to $126.

$\frac{100 - 30}{100} \times x = 126 \\ \frac{70}{100} \times x = 126 \\ \frac{7}{10} \times x = 126 \\ x = 126 \times \frac{10}{7} \\ x = 18 \times 10 \\ x = 180$

Therefore,required the usual price of the smartphone was 180 rupees.

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