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podryga [215]
3 years ago
8

It takes21 minutes for 5 people to paint 7walls. How many minutes does it take 3people to paint 5 walls?

Mathematics
1 answer:
scoray [572]3 years ago
8 0

so 5 people work each one for 21 minutes, that means 21+21+21+21+21 minutes altogether, namely 105 minutes, it took that long for 7 walls, hmmmm how long for just one wall then? well, 105 ÷ 7, namely 15 minutes then, for just 1 wall.


now, if it takes 15 minutes of work to do one wall, what about 5 walls? well, that'd be 15*5 or 75 minutes.


so if we have 3 folks working, how much would each one work? well, 75 ÷ 3, namely 25 minutes, so each of them will work 25 minutes, namely 25+25+25 minutes, so in 25 minutes, they'll be done with 5 walls.

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The starting value is 20,300, and the value is decreasing by 9.5% each year.

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A decrease by 9.5% corresponds to multiplying by 91.5% each year.

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How to find an equivalent fraction of 36/48 with numerator 9
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Answer:

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Step-by-step explanation:

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6 0
2 years ago
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ANSWER ASAP PLEASE FOR BRAINLIEST
PSYCHO15rus [73]

Answer:

<h2><em><u>11.2 - B to C</u></em></h2><h2><em><u>12 - B to A</u></em></h2><h2><em><u>8.8 - A to C</u></em></h2>

You have to multiply all the sides by 4.

B to C = 2.8*4

2.8 * 4 = 11.2

B to A = 3*4

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2.2*4 = 8.8

Hope this helped!

3 0
3 years ago
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