Time & Work / Pipes — practice questions with answers
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Kavita can stitch a set of curtains in 14 days, while Lalitha needs 35 days. Working together, in…Pipe A can fill a tank in 12 hours and pipe B in 15 hours. A drain pipe C can empty the full tank…Two pipes can fill a tank in 15 minutes and 20 minutes respectively, while a waste pipe can empty…Leela can key in a long report in 26 hours, and Manoj can do the same job in 39 hours. Typing…A hostel tank has two inlets that can fill it in 12 hours and 18 hours, and a drain that can empty…Two inlet pipes fill a cooling tank in 12 minutes and 33 minutes respectively. If both run…Inlet A alone fills a sump in 12 minutes; inlet B alone takes 20 minutes. With both inlets open,…An overhead tank has two inlet pipes that fill it in 15 hours and 21 hours respectively. With both…Sunita can finish a piece of work in 27 days, and Kamla can finish the same work in 54 days. If…A municipal tank is filled by pipe A in 26 hours and by pipe B in 78 hours. If both pipes run…A can do a work in 12 days and B in 18 days. They work together for 4 days, then A leaves. In how…An inlet pipe can fill a tank in 12 hours, while an outlet pipe can empty the full tank in 15…A can do a piece of work in 12 days and B in 6 days. Working together, in how many days will they…Rekha can whitewash a hall alone in 34 days, while Sunil needs 51 days. If they work together, in…Ramesh can paint a wall in 10 days and Suresh can paint it in 15 days. Working together, how many…Kavita can stitch a batch of school uniforms in 26 days and Lata in 39 days. They work together…Two garden hoses can fill a paddling pool in 35 minutes and 140 minutes respectively. How many…Working alone, a tailor finishes an order in 20 days and his assistant in 30 days. How long will…Kiran can finish a project in 16 days and Vinay in 48 days. They work together for 6 days, then…Ritu and Meena together can paint a wall in 14 days, while Ritu alone needs 21 days. How many days…Ishaan can paint a boundary wall in 14 days, while Kabir takes 21 days. If both paint together,…Working alone, Farida finishes a quilt in 20 days while Gita needs 30 days. They work together for…Hari is 50% more efficient than Imran. Imran alone can build a fence in 30 days. Working together,…A can do a work in 20 days and B in 30 days. They work together for 5 days, after which A leaves.…Kiran can paint a hall in 24 days, while Sunil can paint it in 16 days. If both paint together,…
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