Katrin’s monthly payment for electricity went down from £38.60 to £34.20 she thinks this means that her monthly payment has gone by 1/6. Is katrin correct? Show how you think this?
Decreasing from £38.60 to £34.20 is a decrease of 38.60-34.20 = £4.40. To find the ratio of decrease, we compare this to the original cost. [tex]\frac{4.4}{38.6} = 0.114
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\\ \frac{1}{6} = 0.1\bar{6}[/tex] The bill did not decrease by 1/6.
