A signed a contract for building a road of 1920 meters long within 120 days. He employed 160 workers for this task. But after 24 days he found that only 1/8 of the task has been finished. If A want to finish the road in time how many additional workers he has to employee ?
Solution
Correct Answer: Option B
Solution: Days remaining = 120 - 24 = 96
Work done = 1920/8 = 240 meter and work remaining = 1920 - 240 = 1680 meter
240 meter is done in 24 days by = 160 men
1 " " " " 1 " " = (160 \( \times \) 24) / 240 men.
1680 " " " " 96 " " = (160 \( \times \) 24 \( \times \) 1680) / 240 \( \times \) 96 men
= 280 men
Additional men need = 280 - 160 = 120 Men.
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