Problema Solution
The units of a two digit number divides the tens digit twice with a remainder of 1. The sum of the digits is 10. Find the number
Answer provided by our tutors
Let
x = the untis
y = the tens
then the two digit number is x + 10y.
Also we know that:
y = 2x + 1
and
x + y = 10
We have the following system of equations:
y = 2x + 1
x + y = 10
........
click here to see the system of equations solved for x and y
........
x = 3
y = 7
The number is 3 + 10*7 = 73.