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3 years ago

If it takes 3 men 5 hours to dig 12 holes, how many hours does it take for 3 men to dig 84 holes?

Mathematics

1 answer:

alexgriva [62]3 years ago

8 0

Answer:

Hence it will take 35hours

Step-by-step explanation:

Let the time it took to dig hole be x

Ley the number of holes be n

Using the relationship x = kn (direct relationship)

if it takes 3 men 5 hours to dig 12 holes, hence;

when x = 5, n = 12

k = x/n

k = 5/12

To get how many hours it take for 3 men to dig 84 holes, then;

when n = 84, x = ?

x = 5/12 * 84

x = 5 * 7

x = 35hours

Hence it will take 35hours

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2 years ago

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Step-by-step explanation:

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3 years ago

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2 years ago

Read 2 more answers

16. Carlos puts 0.3 of his monthly income into savings. What percent of his money

Minchanka [31]

Answer:

70%

Step-by-step explanation:

First, convert 0.3 into a percentage;

To do so, convert it 0.3 into a fraction then multiply by 100;

0.3 into a fraction = 3/10

3/10 into a percentage = $\frac{3}{10} *100$

The 10 at the bottom cancels out one zero at the top and you are left with 30.

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3 years ago