Q18. The repair work of an overhead bridge was to be completed in 5 days time. 30 men were put on the job. After 3 days, it was found that only half the work could be completed. How many more men should be put on the job so that the work is completed as per the schedule?

(a) 12

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(b) 18

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(d) 20

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Solution

The correct option is C
(c) 15

30 men completed half of the work in 3 days. Remaining half of the work is to be completed in 2 days by X men, say.

45 men can complete $\frac{1}{2}$ of the work in 2 days.

$∴$ 15 more men are required so that the work is completed as per schedule.

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Q18. The repair work of an overhead bridge was to be completed in 5 days time. 30 men were put on the job. After 3 days, it was found that only half the work could be completed. How many more men should be put on the job so that the work is completed as per the schedule?

The correct option is C (c) 15 30 men completed half of the work in 3 days. Remaining half of the work is to be completed in 2 days by X men, say. 45 men can complete 12 of the work in 2 days. ∴ 15 more men are required so that the work is completed as per schedule.

The correct option is C
(c) 15

30 men completed half of the work in 3 days. Remaining half of the work is to be completed in 2 days by X men, say.

45 men can complete $\frac{1}{2}$ of the work in 2 days.

$∴$ 15 more men are required so that the work is completed as per schedule.