the number is 57733 contains two sets digets in witch one digets is ten times as great as the other what r the values of each di
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In 1 hour Kalon by himself can clean 1/4 of a chimney.
In one hour Kalon and Marna together can clean
Therefore in 1 hour Marna working alone can clean
So, it takes Marna 3 hours to clean a chimney, working by herself.
In one hour Kalon and Marna together can clean
Therefore in 1 hour Marna working alone can clean
So, it takes Marna 3 hours to clean a chimney, working by herself.