Question

The price of a car was decreased by 10% to £729.
What was the price before the decrease?

Answer 1

Given,

The price of a car was decreased by 10% to £729.

To find,

The price of the car before the decrease.

Solution,

We can simply solve this mathematical problem using the following process:

Let us assume that the price of the car before the decrease is £ x.

Mathematically,

p% of a number A is calculated as:

p/100 × A

{Statement-1}

According to the question;

The price of a car after decreasing by 10% = £729

=> (Initial price) - 10% of the initial price = £729

=> 90% of the initial price = £729

=> 90/100 × £ x = £729

{according to statement-1}

=> 9/10 × x = 729

=> x = (7290/9) = 810

=> price of the car before the decrease = £ 810

Hence, the price of the car before the decrease is £ 810.