find the number

Asked by geethika | 10th Feb, 2010, 05:12: AM

Expert Answer:

Let the two digits of the number be x and y, and the number 10x+y.

x + y = 15 ..........(1)

10y + x = 10x + y + 9

9y - 9x = 9

y - x = 1 ................(2)

Solve (1) and (2),

y = 8 and x = 7

The number is 78.

Regards,

Team,

TopperLearning.

Answered by  | 10th Feb, 2010, 05:21: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.