A contractor undertook to build a road in 200 days. He employed 140 men. After 60 days, he found that only one-fourth of the road could be built. How many additional men should he employ to complete the work in time?
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?