Question

a number consists of two digit of a b**** the tens digit exceeds the units digit by 6 the number itself is equal to 10 times the sum of its digits find the number

Answer 1

Let the number is 10y+x where x is the unit digit and y is the ten's digit. Then by the given question,
y=x+6 -------------(1) and
10y+x=10(x+y)
or, 10y+x=10x+10y
or, x-10x=0
or, x=0
 ∴, y=0+6
or, y=6
∴, the given number is 
10×6+0=60

hope it helps u a lot