alleryDev is 50% more efficient than Esha, who alone completes a job in 30 days. Dev alone needs
A15 days
B45 days
C25 days
D20 days
Answer & Solution
Correct answer: D. 20 days
Dev's rate is 1.5 x 1/30 = 1/20 per day, so he needs 20 days.
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