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. Give your answer to 2 significant figures.
Accepted Solution
A:
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%