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Ram and Sham can complete the work in 4.5 days. Ram is thrice efficient as Sham. In how many days Sham can complete the work?1. 10 days2. 20 days3. 18 days4. 12 days5. 9 days |
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Answer» Correct Answer - Option 3 : 18 days Given: Let Ram's and Sham's 1 day's work be 1/a and 1/b respectively. ⇒ 1/a + 1/b = 1/4.5 ⇒ 1/a + 1/b = 10/45 = 2/9 Then, ⇒ b = 3a Solving, a = 6 and b = 18 ∴ Sham will complete work in 18 days. |
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