Lea is two years older than Mia.The sum of their ages is 20.Find their present ages.
4 answers
So if the SUM of their age is 20, what does SUM mean?
@aera heres a hint. Your going to undo the problem.
Lia was 11 and Mia was 9. 9 plus eleven equals twenty, and 11 is two numbers larger than nine. :)
SUM means to add.
L = M + 2
L + M = 20
Substitute M+2 for L in the second equation and solve for M. Insert that value into the first equation to solve for L. Check by putting both values into the second equation.
L = M + 2
L + M = 20
Substitute M+2 for L in the second equation and solve for M. Insert that value into the first equation to solve for L. Check by putting both values into the second equation.
7 answers