Question

Charles is saving $5 each week.He earns an extra $15 by mowing his neighbor's lawn.Write the inequality to show how to find how many weeks,W,will he need to save in order to save at least $75.

Answer 1

Minimum number of weeks = 4

Explanation:

Charles earns $5 each week .Also he makes $15 each week by mowing his neighbours lawn.

Thus , in total , he earns a total of $20 each week.

We have to find the minimum number of weeks needed to make $75 .

Number of weeks required =
`(money required)/(money made per week)`

=
`(75)/(20)`

=3.75

Since the number of weeks, W, is an integer, choose the next highest integer.

Hence the minimum number of weeks required = 4