Naomi and Claire are painting a mural. Naomi paints 2 square feet per hour and has already painted 16.5 square feet. Claire pain
2 answers:
Answer:
<h2>After four and a half hours, they will paint the same amount of area.</h2>Step-by-step explanation:
Let's call hours.
So, Naomi paints at a rate of which means 2 square feet per hour. Additionally, we know that she already painted 16.5 square feet. All this is expressed as
On the other hand, Claire paints at a rate of , that is, 4 square feet per hour. She already painted 7.5 square feet. All this can be expressed as
If we want to find the time where the paint an equal number of square feet, we just need to make then equal, that is
Then, we solve for
Therefore, after four and a half hours, they will paint the same amount of area.
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is the element at the second line.
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13.50 : 20 = x : 100
x =
x =
x = 67,5
percentage = 67,5%