Sumof two digits of a number is 10 if its digits are interchabged value increase is 18%
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Step-by-step explanation:
LEt the tens digit be a and ones digit be b
a + b = 10
10b + a = 118(10a+b)/100
1000b + 100a = 1180a + 118b
1000b - 118b = 1180a - 100a
882b = 1080a
147b = 180a
49b = 60a
a = 49b/60
Substituting in eqn 1
49b/60 + b = 10
49b+60b = 600
109b = 600
b = 600/109
a = 49b / 60
= 49x600/109 x 1/60
= 29400/6540
= 4.5
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