Question

in a two digit number. the digit in the tens place is four times the digit in the unit place.if the sum of the digits is 10 find the number.​

Answer 1

Here is your solution
Let units digit place be x.

Let tens digit place be y.

Given that the digit in units place is four times the digit in the tens place.

= > x = 4y  ------ (1)

Given that the sum of digits is equal to 10.

= > x + y = 10

= > 4y + y = 10

= > 5y = 10

= > y = 2


Substitute y = 2 in (1), we get

= > x = 4y

= > x = 4(2)

= > x = 8.



Therefore the number is 82.


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