Efficiency ratio A:B = 4:5. Time is inversely proportional to efficiency.
So time ratio A:B = 5:4.
If A takes 15 days, then B takes 15×54=12 days.
CUET UG 2023 — General Test Arithmetic
The ratio of working efficiency of A and B is 4 : 5. If A alone completes the work in 15 days then in how many days can B alone complete the work ?
Held on 19 Jun 2023 · Verified 13 Jul 2026.
15 days
12 days
16 days
20 days
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