Question

Unit digit of a two digit number is 4 less than its tens digit on reversing the digit it is found that number decreased by 36 find the number

Answer 1

a/c
10x + x-4 = 11x -4
40x-4 +x = 41x-4
11x-4 = 41x-4 -36
11x-4 = 41x - 40
11x= 41x-36
36 = 41x-11x
36 = 30x
x = 36÷30
x = 5/3
then
no = 10×5/3 + 5/3
= 50/3 + 5/3
=55/3
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