Problema Solution
Thu is five years older than her brother Tuan. the sum of their ages is 51. what are their ages
Answer provided by our tutors
Let
x = the age of Thu
y = the age of Tuan
y = 5 + y
x + y = 51
........
click here to see the system of equations solved for x and y
........
x = 28 years
y = 23 years
Thu is 28 years old.
Tuan is 23 years old.