Question
Download Solution PDF14 persons can sink a tubewell in 12 days. How many extra persons are required to sink the tubewell in 8 days?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
14 persons can sink a tubewell in 12 days.
Time required to sink the tubewell = 8 days.
Formula used:
Work = Number of persons × Number of days
To sink the tubewell in 8 days, we calculate the total number of persons required.
Calculation:
Work done by 14 persons in 12 days = Work done by total persons required in 8 days.
⇒ 14 × 12 = Total persons required × 8
⇒ Total persons required = (14 × 12) ÷ 8
⇒ Total persons required = 21
Extra persons required = Total persons required - Initial persons
⇒ Extra persons required = 21 - 14
⇒ Extra persons required = 7
∴ The correct answer is option (2).
Last updated on Jun 7, 2023
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