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zepelin [54]
2 years ago
11

15 men can do a piece of work in 80 days. If 5 more men are added, how long will it take to complete same piece of work?​

Mathematics
1 answer:
tresset_1 [31]2 years ago
4 0

Answer:

Step-by-step explanation:

This is an inverse proportion.

men = k / Time         So first we need to find k

k = men * Time         Substitute values

k = 15*80

k = 1200  Notice the units are man days.

Now what happens if we increase the number of men to 20? What happens to the number of days.

20 = 1200 / time          Multiply both sides by time

20*time = 1200            Now divide by 20

time = 1200/20

Answer: time = 60 days

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</span>so answers are

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4 0
3 years ago
I’m stuck on this question. any help would be greatly appreciated
Mademuasel [1]

Using the Pythagorean theorem we get:

y^2+8^2=12^2.

Simplifying the above result we get:

y^2+64=144.

Subtracting 64 from the above equation we get:

\begin{gathered} y^2+64-64=144-64, \\ y^2=80. \end{gathered}

Therefore:

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Answer:

y=8.9.

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explanation:
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Answer:

what type of math is this

6 0
3 years ago
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