main to paint a wall in 5 by 12 hours webix 2/7 by 15 hours to paint the same wall who worked along the question mark void fraction what is longer question answer 5 by 12 class 7 by 15 75 - 84 84 - 75 is equals to 9/3 antha
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ans is 5/7 and ans 45 is the correct answer
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