1.

write the two digit number as 10x + y "one of the two digits of a two digit number is 3 times the other digit." x = 3y if u inter change the digit of this two digit number and add the resulting number to original number you get 88. (10y + x) + (10x + y) = 88

Answer»

The number is 10x+y
And x=3y (EQUATION 1)
A.q.
(10y+x)+(10x+y)=88
11x+11y=88
11(x+y)=88
x+y=88/11
x+y=8
Frim equation 1 x=3y
So,
3y+y=8
4y=8
y=8/4
y=2
And x=3y
=3(2)
=6
Hence the number is 62.


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