Answer:
21 hours
Step-by-step explanation:
We can use a ratio to solve
7 houses 30 houses
------------- = --------------
5 hours x hours
Using cross products
7x = 5*30
7x = 150
Divide by 7
7x/7 =150/7
x =21.42857143
Rounding to the nearest whole number
x = 21 hours
6*3=18
5*3=15
6*4=24
5*4=20
then you would add the columns and you would get 1,904
It would be easier to show you.
C is the correct answer
it's equal to 0.42
good luck
The answer would be 24. hope that helped
