18 skilled workers can complete a task in 12 days while 24 semi-skilled workers need 15 days to complete the same task. 12 skilled workers started the task but 3 of them left after a few days. How many semi-skilled workers should replace the 3 skilled ones who left so that the task can be completed in stipulated time? (a) 5 (b) 2 (c) 3 (d) 4
Answers
Answered by
1
Answer:
Skilled Hours x 2) + (Unskilled Hours)) x 10 = 1000
Hours = 33.33
Answered by
2
step by step explain
Given:
18 men can complete a task in 12 days
After 4 days 2 workers left the work
Concept:
Total work = no. of men working × total number of days taken
Calculation:
Total work = 18 × 12 = 216 units
For 4 days 18 men do the work
Work completed in 4 days
18 × 4 = 72 units
Remaining work = 216 – 72 = 144
⇒ 144 units completed by 16 workers in 144/16 = 9 days
option :B
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