Let the number be 10x+y
As per the question
x + y = 11…………(1)
and
(10y +x) - (10x+y) = 45
9 (y – x) = 45
y – x = 5 …………..(2)
from equation (1) and (2)
x = 3 and y = 8
So, the number be 38
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