If 15 workers can build a wall in 48 hours, how many workers are needed to build it in 30 hours?
A20
B24
C25
D30
Explanation
M1*D1 = M2*D2 => 15 * 48 = M2 * 30 => M2 = (15 * 48) / 30 = 24.
Exam Relevance
- Topic: Work and Time
- Subtopic: Work Force
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