Question

The cost of a ticket increases by 10% to £18.15
Work out the original cost.

Answer 1

Answer: £16.50

Explanation:

Let the original cost be x

x + 10/100x = 18.15

1.1x = 18.15

x = 16.50

Answer 2

£16.50

Explanation:

`x * (1+(10)/(100) )=18.15`

`x * (110)/(100) =18.15`

`(110)/(100) x=18.15`

`1.1x=18.15`

`(1.1x)/(1.1)=(18.15)/(1.1)`

`x=16.5`