Problem Solving (PS) | Re: The ratio of a two digit number to a number formed by reversing its di

let xy and yx be reversed numbers
(10x+y)/(10y+x)=4/7→
2x=y
so xy can have four values: 12, 24, 36, 48
and yx can have four values: 21, 42, 63, 84
sum of eight values=330
C

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