A two-digit number is three times the sum of its digits. Find this number.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
The number is 1 0 t + u and the sum of its digits is t + u . So the equation is 1 0 t + u = 3 ( t + u ) . Simplifying further, we get
u t = 7 2
So the desired answer is 2 7 .