CAT 2021 Time and Work Question (Medium)

Question

L and M together can complete a piece of work in 72 days, M and N together can complete it in 120 days, and L and N together in 90 days. In what time can L alone complete the work?

Optima Learn · Accepted Answer

To find how long L alone takes, we need to combine the three pairwise rates to isolate L s individual rate. Understanding the Setup L M rate 1 72, M N 1 120, L N 1 90 tank work per day . Analyzing the Calculation Adding all three 2 L M N 1 72 1 120 1 90. Using LCM 360 5 360 3 360 4 360 12 360 1 30,

CAT 2021 Time and Work — Previous Year Question

CAT 2021

Quantitative

Time and Work

Medium

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