Question

At Trent's garage, 3 cases of brake fluid last 4 weeks. Trent has 5 cases. How much more brake fluid should Trent order so that he has enough for 13 weeks? Round your answer up to the nearest whole number.

Answer 1

3 cases / 4 weeks = 0.75 cases per week

for 13 weeks = (0.75 * 13) = 9.75 cases

9.75 - 5 = 4.75 rounded = 5...he needs to order 5 cases

Answer 2

Answer: Trent should order so that he has enough for 13 weeks==5

Explanation:

Given: At Trent's garage, 3 cases of brake fluid last 4 weeks.

So, the number of cases per week =
`(3)/(4)`

It implies the number of cases in 13 weeks=
`13*(3)/(4)=(39)/(4)=9.75\approx10`

Now, Trent has already 5 cases.

So, the number of cases, Trent should order so that he has enough for 13 weeks=10-5=5