Amount of room hannah can paint in an hour = 1/20
amount of room destiny can paint in an hour = 1/16
number of hours = x
1/20x + 1/16x = 1
the reason why this formula is true is, the amount of the room painted in the end should be 1 (the whole room)
4/80x + 5/80x = 1
9/80x = 1
9x = 80
x = 80/9 hours
x = 8.89 hours
$530.40/4= $132.60
$132.60 x 3=$397.80
Or
$530.40 x .75= $397.80
It would be A or B
but not D,C
1 stone = 20 square inches
1 stone * 30 = 20 square inches * 30
30 stones = 600 square inches
Answer:
no idea
Step-by-step explanation:
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