Write the answer in a system of linear equations

WIth 2 variables, please! And let statements.

A mother is 10 times as old as her daughter; in 24 years from now, she will be twice as old as her daughter. Find their present ages.

Let m be the mother's age and d the daughter's age

m = 10d

m + 24 = 2(d + 24)


m – 10d = 0
m – 2d = 24
-------------------
.......8d = 24

d = 3, m = 30