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Crank
3 years ago
15

A room can be cleaned in 2 hours if rob and Harry work together. Ron could clean it in 3 hours. How long can harry clean it?

Mathematics
1 answer:
tresset_1 [31]3 years ago
6 0

Answer:

6 hours

Step-by-step explanation:

Let the total work be X

Combined speed: X/2

Ron's speed: X/3

Harry's speed: S

X/2 = X/3 + S

S = X/2 - X/3 = (3X - 2X)/6 = X/6

Harry's speed is X/6, so he'll take 6 hours

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Answer:

£160,000

Step-by-step explanation:

Alice bought the house in 2008 for £x.

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In 2019, the house sold for a 5% loss, so it sold for 0.95(1.2x). (* see explanation below)

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0.95(1.2x) = 182,400

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A quick way to apply a percent increase or decrease to a number is to using the following method. The number you start with is 100% of the number. If you are adding a percent to it, then add the percent to 100% and convert it to a decimal. If you are subtracting the percent, then subtract the percent from 100% and convert to a decimal. Then multiply the decimal by the original number to find the increased or decreased number.

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Example of percent decrease:

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