Question

The tens digit of a number is 4 times its ones digit if 27 is subtracted from the number the digits of the difference obtained are rivers of those of the number find the number

Answer 1

hii mate!!

Let us assume x is a tenth place digit and y is one's place digit.

Therefore, the number is 10x + y

Given:

x = 4y ------------1

Also given:

10x + y - 27 = 10y + x
9x - 9y = 27
x - y = 3 ------------2

Substitute the value of x from equation 1 in equation 2

4y - y = 3
3y = 3
y = 1

Therefore, x = 4y = 4 * 1 = 4

The number = 10 * 4 + 1 = 41

hope it helps !!☺☺☺☺☺✔✔

Answer 2

the no. is 10+y
give
x=4y_____(1)
also given
10x+ y-27=10+x
x-y=3 ___(2)

on substution
4y-y=3
3y=3
y=1

therefore x=4y=4*1= 4
the no 10*4+1= 41.