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Question
Mr. Arif can complete a job in 15 minutes, while Mr. Asif takes twice as long to do the same job. If they work together, how many minutes will they require to complete the job?
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ANSWER : 1
Descrption
<p class = "text - justify" style = "box - sizing: border - box; margin - top: 0px; margin - bottom: 1rem; font - size: 1.1em; line - height: 1.7em; font - family: bangla, sans - serif; color: #212529; background - color: #ffffff; text - align: justify !important;"><span style = "box - sizing: border - box; font - size: 18px;">In 15 minutes Arif can complete a job </span></p> <p class = "text - justify" style = "box - sizing: border - box; margin - top: 0px; margin - bottom: 1rem; font - size: 1.1em; line - height: 1.7em; font - family: bangla, sans - serif; color: #212529; background - color: #ffffff; text - align: justify !important;"><span style = "box - sizing: border - box; font - size: 18px;">∴ in 1 '' '' '' '' 1/15 part</span></p> <p class = "text - justify" style = "box - sizing: border - box; margin - top: 0px; margin - bottom: 1rem; font - size: 1.1em; line - height: 1.7em; font - family: bangla, sans - serif; color: #212529; background - color: #ffffff; text - align: justify !important;"><span style = "box - sizing: border - box; font - size: 18px;">as, Asif takes twice as long to do the same job, Asif needs (15* 2) = 30 mins</span></p> <p class = "text - justify" style = "box - sizing: border - box; margin - top: 0px; margin - bottom: 1rem; font - size: 1.1em; line - height: 1.7em; font - family: bangla, sans - serif; color: #212529; background - color: #ffffff; text - align: justify !important;"><span style = "box - sizing: border - box; font - size: 18px;">In 30 minutes Arif can complete a job </span></p> <p class = "text - justify" style = "box - sizing: border - box; margin - top: 0px; margin - bottom: 1rem; font - size: 1.1em; line - height: 1.7em; font - family: bangla, sans - serif; color: #212529; background - color: #ffffff; text - align: justify !important;"><span style = "box - sizing: border - box; font - size: 18px;">∴ in 1 '' '' '' '' 1/30 part</span></p> <p class = "text - justify" style = "box - sizing: border - box; margin - top: 0px; margin - bottom: 1rem; font - size: 1.1em; line - height: 1.7em; font - family: bangla, sans - serif; color: #212529; background - color: #ffffff; text - align: justify !important;"><span style = "box - sizing: border - box; font - size: 18px;">together they can work in 1 min (1/15 + 1/30) = 3/30 = 1/10 part</span></p> <p class = "text - justify" style = "box - sizing: border - box; margin - top: 0px; margin - bottom: 1rem; font - size: 1.1em; line - height: 1.7em; font - family: bangla, sans - serif; color: #212529; background - color: #ffffff; text - align: justify !important;"><span style = "box - sizing: border - box; font - size: 18px;">they can do 1/10 part in 1 min</span></p> <p class = "text - justify" style = "box - sizing: border - box; margin - top: 0px; margin - bottom: 1rem; font - size: 1.1em; line - height: 1.7em; font - family: bangla, sans - serif; color: #212529; background - color: #ffffff; text - align: justify !important;"><span style = "box - sizing: border - box; font - size: 18px;">they can do 1 (or whole) part in 10 min</span></p> <p class = "text - justify" style = "box - sizing: border - box; margin - top: 0px; margin - bottom: 1rem; font - size: 1.1em; line - height: 1.7em; font - family: bangla, sans - serif; color: #212529; background - color: #ffffff; text - align: justify !important;"><span style = "box - sizing: border - box; font - size: 18px;">ans: 10 minutes</span></p>
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