Question

7 Electricity prices increased by 66%

in 2009.
Mr and Mrs Smith's monthly bill
was £69.72 after the increase.
What was the bill before the
increase?

Answer 1

$23.7

Explanation:

Electricity prices increased by 66% in 2009.

Mr and Mrs Smith’s bill was $69.72 after the increase .

The bill before the increase will be 66% / 100% x $69.72

= 0.66 x 69.72

= $46.02

Bill before the increase will be $69.72 - $46.02

=$23.7