Question

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.

Answer 1

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%

Answer 2

The weekly average cost of caravan is increased in the month of July from 520 to 800. According to this, the percentage increase in the cost of caravan is 35%.

Given information:

The "off-peak" weekly average cost of hiring a caravan in Wales is $520.

The average cost in the month of July is increased to $800.

As the percentage increase $X$ in the cost is given by the formula,

$X=\dfrac{\text{final value}-\text{initial value}}{\text{initial value}}\times 100$

According to the question,

The initial value of the cost is $520

The final value of the cost is $800

So, the percentage increase $X$ in the cost is,

$X=\dfrac{800-520}{800}\times 100\\\\X=\dfrac{280}{800} \times 100 \\\\X=35$

Hence, in the month of July, the percentage increase in the cost of caravan is 35%.

For more information, visit link:

https://brainly.com/question/14163915