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The ratio of John's allowance to Bill's allowance is 3:7. The ratio of John's allowance to Maw's allowance is 2:5. What is the ratio of Mary's allowance to Bill's allowance? Express your answer as a common fraction.

 Jun 8, 2020
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j/b * m/j  = m/b

3/7 * 5/2 = 15/14     

 Jun 8, 2020

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