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If a man cuts the grass of a lawn in T minutes, what part of the lawn can he cut in 30 minutes?1. T/302. T-303. 30-T4. 30/T |
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Answer» Correct Answer - Option 4 : 30/T Given: the grass of a lawn is cut by a man = T minutes Concept used: If a person does work in n days, then one day work by a person = 1/n part of the total work. Calculation: ∴ Grassland will be cut by a man in 1 minute = 1/T part ⇒ In 30 minutes, Grassland will be cut by a man = (1/T) × 30 part ⇒ In 30 minutes, Grassland will be cut by a man = 30/T part Hence, part of the lawn can be cut in 30 minutes is 30/T. |
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