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1). 2/15 days2). 7/30 days3). 8/17 days4). 10 days |
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Answer» Mike and Mindy’s 1 day work = 1/6 Mindy and JOSH’s 1 day work = 1/10 Mike, Mindy and Josh’s 1 day work = 1/4 So, Mike and Josh’s 1 day work = 2 × (Mike, Mindy and Josh’s 1 day work) - (Mike and Mindy’s 1 day work) - (Mindy and Josh’s 1 day work) ⇒ 2 × (1/4) - (1/6) - (1/10) ⇒ (1/2) - (4/15) = 7/30 ∴ Time taken by Mike and Josh to complete the PAINTING = 1/(7/30) = 30/7 = $(4\frac{2}{7}{\rm{\;days}})$ |
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