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Sagot :
According to the given statement the quicker roofer can finish a house's roof in around 6.7 days when working alone.
How do you rounding off ?
In a given base, a round number is a number that ends including one or more "0s." So, 590 is more round than 592, but less round than 600. A round number is frequently interpreted in both technical and casual language to stand for something like a value or values close to the nominal value represented.
According to the given data:
If the faster roofer takes t, the slowest one will take 3t.
Their total daily charges for roofing are
1/t + 1/(3t) = 1/5
4/(3t) = 1/5
multiply by 5t
t = 5(4/3)
= 20/3
= 6.7
To know more about rounding off visit:
https://brainly.com/question/13391706
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