Find out the number

Algebra Level pending

The sum of two digit number is 9. Also, 9 times this number is twice the number obtained by reversing the order of digits of the number. Find the number.

18 27

Vishwathiga Jayasankar by vishwathiga jayasankar , 20, India

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.

1 solution

t = t e n s d i g i t t=tens~digit

u = u n i t s d i g i t u=units~digit

t + u = 9 t+u=9 (equation 1)

9 ( 10 t + u ) = 2 ( 10 u + t ) 9(10t+u)=2(10u+t) (equation 2)

Solving the system of equations gives t = 1 t=1 and u = 8 u=8 .

So the answer is 18 18 .

0 Helpful 0 Interesting 0 Brilliant 0 Confused

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...