Question

The youth soccer team is fundraising by washing cars. They paid $84.55 for supplies. If

they charge $8.00 per wash, how many cars must be washed to profit at least $300.00 dollars?

Answer 1

The soccer team must wash 49 cars in order to gain at least $300.

Explanation:

The soccer team started out by paying $84.55. They charge $8 per car wash. So let's say how many cars they washed was x. They need to gain at least $300 dollars. If we put this in an equation it looks like this (we are solving for x):

8x - 84.55 >or= 300

To find x we have to do the following steps:

8x - 84.55 >= 300

+ 84.55 + 84.55

8x >= 384.55

/8 /8

x >= 48

Now we have to make sure that this is correct:

8 * 48 - 84.55 = ?

384 - 84.55 = 299.45

Since 299.45 is less than 300, x must be greater than 48, but since 299.45 is so close to 300, my educated guess would be that x=49.

8 * 49 - 84.55 = ?

392 - 84.55 = 307.45

Since 307.45 is greater than 300, x=49. So we can conclude that they must wash 49 cars to profit at least $300.