Question

Keneesha is would like to use her money from school jobs to purchase an Xbox, which cost $200 she makes $6 per hour babysitting and $7 per hour cleaning houses. If she babysits for 15 hours, how many hours must she spend cleaning houses to make at least $200?

Answer 1

15.72 hours in cleaning

Explanation:

1. if we take $6 x 15 hours that comes $90

2. $7x15.72 it would come out be 110.04

it comes out to be 200.04

Answer 2

Step1- If she makes $6 for an hour then how much will she gain from 15 hours? So we multiply 6x15=$90. You can use cross multiplication if u are confused on what to multiply:

1hour - $6

15hours-$?

Step2- How much is still needed to gain $200?

So we subtract the total with the amount we got to find out how much is still left: $200-$90=$110

Step3- Therefore, for how many hours should she clean to obtain $110?

1hour - $7

?hours-$110

$110/7=amount of hours needed to obtain $110

15.7hours and u can round it off to 16