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Question 532716: what 2 digit number exceeds its reversal by 20%?
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! what 2 digit number exceeds its reversal by 20%?
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Let 10x + y = the original number
then
10y + x = the reversed number
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10x + y = 1.2(10y + x)
10x + y = 12y + 1.2x
10x - 1.2x = 12y - y
8.8x = 11y
divide both sides by 11
.8x = y
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Only one single digit value for x will give equal an integer value for y:
x=5
y = .8(5)
y = 4
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54 is our two digit number
:
:
Check this
54 = 1.2(45)
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