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Two numbers are in the ratio 7 ratio 3 if their difference is 20 find the numbers |
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Answer» LET X and y be the TWO numbers. Then y/x = 57 and x−y=20 Cross MULTIPLYING the proportion 5x=7y or y= 75 So, x−y=20x− 75 ⇒ 77x−5x= 7=20 ⇒x= 2140 =70y= 75 x= 75 ×70=50 So smaller NUMBER is 50. Check : yx0/70 = 5/7 and 70−50=20 |
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