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2 years ago

Ted can clear a football field of debris in 3 hours. Jacob can clear the same field in 2 hours. When they work together, the

Mathematics

2 answers:

Nadya [2.5K]2 years ago

5 0

Answer:

1 hour 12 minutes.

Step-by-step explanation:

Let the number of hours = t

Ted can clear the field = $\frac{t}{3}$

Jacob can clear the field = $\frac{t}{2}$

Together they can clear the field = $\frac{t}{3}$ + $\frac{t}{2}$ = 1

$\frac{3t+2t}{6}$ = $\frac{6}{6}$

2t + 3t = 6

5t = 6

t = $\frac{6}{5}$

t = 1.2 hours.

converting 1.2 hours = 1 hour 12 minutes.

It would take 1 hour 12 minutes to clear the field together.

Aleonysh [2.5K]2 years ago

4 0

Answer:

1/2+ 1/3 = 1/t t= 72 minutes (1 hour and 12 minutes)

Step-by-step explanation:

1/2+1/3 =t

3/6 +2/6= 1/t

5/6 = 1/t

Cross multiplication

5t =6

t=6/5 =1 1/5

1 hour and 1/5 of an hour

60 minutes /5 = 12 minutes

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3 years ago

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scZoUnD [109]

Answer:

$c^2 = 9dp$

Step-by-step explanation:

Given

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So:

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Required

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So:

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So, we have:

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and

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Cross Multiply

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Hence, the relationship between d, c and p is: $c^2 = 9dp$

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2 years ago

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Mnenie [13.5K]

Answer:

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Step-by-step explanation:

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