1.

Two numbers are in the ratio 7 ratio 3 if their difference is 20 find the numbers​

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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