Question
Download Solution PDFIn a company ABC Ltd. a certain number of engineers can develop a design in 40 days. If there were 5 more engineers, it could be finished in 10 days less. How many engineers were there in the beginning ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Let original number of engineers = x
Original time = 40 days
New time = 30 days (10 days less)
New number of engineers = x + 5
Concept used:
Work = Men × Days (Work is constant)
Calculations:
x × 40 = (x + 5) × 30
⇒ 40x = 30x + 150
⇒ 40x − 30x = 150
⇒ 10x = 150
⇒ x = 15
∴ The original number of engineers was 15.
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