Question

Pari needs 4 hours to complete a work. His friend Yuvan needs 6 hours to complete the same work. How long will it take to complete if they work together? ​

Answer 1

Answer:

Let the work done by Pari and Yuvan together be x

Work done by part = 1/4

Work done by Yuvan = 1/6

By the given condition

1/4 + 1/6 = 1/x ⇒ (3 + 2)/12 = 1/x 5/12 = 1/x 5x = 12 ⇒ x = 12/5 x = 2(2/5) hours (or) 2 hours 24 minutes

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