If the digits of a two digit number are differ by 3 and digits are interchanged and the resulting no. is added to the original no. gives 143. find the no.
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let the first number be 10x+y and the second number be 10y+x .
10x+y +10y+x =143
11x+11y=143
x+y=13.............1
x-y=3...............2
from 1 and 2
x=8
y=5
10x+y +10y+x =143
11x+11y=143
x+y=13.............1
x-y=3...............2
from 1 and 2
x=8
y=5
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