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There is a group of 5 boys and 2 girls. The two groups working together can do four times as much work as a boy and a girl. Ratio of working capacities of a boy and a girl is:

12:1
22:3
31:3
41:2

Answer:- 1

Explanation:-

Solution:

Let 1 boy's 1 day's work = x
And 1 girl's 1 day's work = y
Now,
(5 boys + 2 girls)'s work = 5x + 2y
Given ,
5x + 2y is equal to 4 times work done by a boy and a girl
Thus,
5x + 2y = 4(x + y)
5x + 2y = 4x + 4y
x = 2y

\frac{x}{y} = \frac{2}{1}

$\frac{{\text{x}}}{{\text{y}}} = \frac{2}{1}$
Hence, the required ratio is 2 : 1

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Hence, the required ratio is 2 : 1 ", "dateCreated": "7/24/2019 10:09:12 AM", "author": { "@type": "Person", "name": "Nitin Sir" } }, "suggestedAnswer": { "@type": "Answer", "text": "

Solution:

Let 1 boy's 1 day's work = x
And 1 girl's 1 day's work = y
Now,
(5 boys + 2 girls)'s work = 5x + 2y
Given ,
5x + 2y is equal to 4 times work done by a boy and a girl
Thus,
5x + 2y = 4(x + y)
5x + 2y = 4x + 4y
x = 2y

\frac{x}{y} = \frac{2}{1}

$\frac{{\text{x}}}{{\text{y}}} = \frac{2}{1}$
Hence, the required ratio is 2 : 1 ", "dateCreated": "7/24/2019 10:09:12 AM" } }

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