Question

работы по ремонту дорог, выполняемые 10 дорожными рабочими в течении 5 дней по 2 часа в сутки. работая в таком же темпе сколько дней понадобиться 2 людям, работающих 5 часов в день, чтобы закончить ремонт?

Answer 1

Given:

работы по ремонту дорог, выполняемые 10 дорожными рабочими в течении 5 дней по 2 часа в сутки.

A road repair work performed by 10 road workers for 5 days, 2 hours a day.

To find:

работая в таком же темпе сколько дней понадобиться 2 людям, работающих 5 часов в день, чтобы закончить ремонт?

Working at the same pace, how many days will it take for 2 people working 5 hours a day to complete the renovation?

Solution:

To solve the given problem we will use the following Man-Days-Hours formula:

$\boxed{\bold{M_1\times D_1\times H_1 = M_2\times D_2\times H_2}}$

Here we have,

M₁ = no. of men = 10

D₁ = no. of days = 5

H₁ = no. of hours = 2  

M₂ = no. of men = 2

D₂ = no. of days = required to find

H₂ = no. of hours = 5

Now, substituting the given values in the Man-Days-Hours formula, we get

$10\times 5\times 2 = 2\times D_2\times 5$

$\implies 100 = 10\times D_2$

$\implies \bold{D_2 = 10 \:days}$

Thus, it will take 10 days to complete the renovation for 2 people working 5 hours a day.

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