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A water bill has increased by 25% to £52.50 work out the original cost?????
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A water bill has increased by 25% to £52.50 work out the original cost?????

User Shanoo
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1 Answer

6 votes
100% - 25% = 75%

52.50 = 75% of what number?

52.50 = 0.75x

Let x = original cost

52.50 ÷ 0.75 = x

70 = x

The original cost was £70.
User Chillyistkult
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