Question

A tash is completed by 25 person in 9 days if they work 6 hours perday . How many days will be needed to complete the task if 15 person work for 9 hours everyday​

Answer 1

Answer:

10 days are required to finish the work if 15 person work for 9 hours everyday

Step-by-step explanation:

Given that 25 persons can complete work in 9 days is they work 6 hours per day

25 persons working for 6 hours means

$25 \times 6 = 150\hspace{0.1cm}person-hours\hspace{0.1cm}per\hspace{0.1cm}day$

Then, 25 persons work for 9 days means

$150 \times 9 = 1350\hspace{0.1cm}person-hours$

Thus, total work $=\hspace{0.1cm}1350\hspace{0.1cm}person-hours$

Now, let $x$ days are required to finish the work if 15 person work for 9 hours everyday

Thus,

$Total\hspace{0.1cm}work\hspace{0.1cm}=15 \times x \times 9\hspace{0.1cm}person-hours\\\\135x = 1350\\\\x=\frac{1350}{135}=10\hspace{0.1cm}days$

Hence, 10 days are required to finish the work if 15 person work for 9 hours everyday

Answer 2

Answer:

that is right solution

Step-by-step explanation:

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