Question

the number in ones place of a two digit number is 5.The number is 5 times when both the number is added.find the number?
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Answer 1

Answer:

let the digit at ten place be =x

and at unit place it is = 5

so number = 10x+5

now according to question

10x +5 = 5(sum of digit)

i.e 10x+5 = 5(x+5)

10x+5 = 5x+25

i. 5x = 20

x = 4

so number = 45