8 The cost of a laptop increased by 25% between 2015 and 2019
In 2019. the laptop cost £1000
How much did the laptop cost in 2015?

Given:

The cost of a laptop increased by 25% between 2015 and 2019.

In 2019, the laptop cost £1000.

To find:

The cost of the laptop in 2015.

Solution:

Let x be the cost of the laptop in 2015.

The cost of a laptop increased by 25% between 2015 and 2019. So, the cost of the laptop in 2019 is

Cost of laptop in 2019 =

                                     =

                                     =

In 2019, the laptop cost £1000.

Therefore, the cost of the laptop in 2015 is £800.

answer: 19 is   2

step-by-step explanation: i just looked at your answer and wrote it down