Devinder divided his collection of 720 stamps among his friend Ravi, Puja, and Swathi, in the ratio 5:4:7. How many stamps did each of them recive?
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Let the ratio be 5x,4x & 7x
5x+4x+7x=720
16x=720
x=720/16=45
5x=225
4x=180
7x=315
5x+4x+7x=720
16x=720
x=720/16=45
5x=225
4x=180
7x=315
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