8RB Group D 23-Sep-2018 Shift 1 Solved Paper

Question : 80 of 100

Marks: +1, -0

3 men and 5 boys can complete a task in 15 days; whereas 6 men and 7 boys can complete the same task in 9 days. Find the relationship between the task done by the boys and the task done by the men.

The work of 4 boys is equivalent to the work of 3 men
The work of 6 boys is equivalent to the work of 2 men
The work of 3 boys is equivalent to the work of 4 men
The work of 7 boys is equivalent to the work of 3 men

Validate

Solution:

One day work of
men +5 boys

={1}/{15}

.....(1)

6 {\men}+7

boys

={1}/{9}

....(2)
After solving in (1) and (2),
Work done by 1 Boy

={1}/{45 \×3}

Work done by 1 Men

={4}/{15 \×27}

So, work of 4 boys

={1}/{45 \×3} \×4={4}/{45 \×3}

Work of 3 men

={4}/{15 \×27} \×3={4}/{45 \×3}

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