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13-05-2020
Mathematics

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in a fundraising committee of 90 people the ratio of men to women is 7:2. find the number of women required to join the existing committee so that the ratio of men to women is 5:4

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13-05-2020

Hello,

Step-by-step explanation:

90 = 9 x 10 = (7 + 2) x 10 = 70 + 20

70 men and 20 women

[tex]\frac{70}{5} = \frac{20 + X}{4}[/tex]

56 = 20 + X ⇔ X = 36

Answer : + 36 women

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