The "off-peak" weekly average cost of hiring a caravan in Wales is £520. In July the average cost increases to £800. Calculate the percentage increase in cost.
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For this case you can solve the problem by applying a simple rule of three in which we have
520 ---> 100%
800 ---> x
Clearing x we have
x = (800/520) * 100 = 154%
the percentage increase in cost was
154-100 = 54%
answer
the percentage increase in cost was 54%
Step-by-step explanation:
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