Question
Lea is two years older than Mia.The sum of their ages is 20.Find their present ages.
Answers
Can someone check this?
So if the SUM of their age is 20, what does SUM mean?
Can someone check this?
@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. :)
PsyDAG
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.