Let us denote the years of Mary with M and the years that Al have with A.
<span>We know that the sum of Mary and Al's age is 48. So, we can write:
M+A=48 (1)
</span><span>We also know that twelve years ago, Mary was twice as old as Al.
So we can write:
M-12=2*A (2)
From the first equation (1): M=48-A
Let put this in the second equation:
48-A-12=2A
36=3A
A=12
M=48-12=36
</span>
Answer:
Ok i understand what this is.
Step-by-step explanation:
I will show u i just have to figure it out first.Im sorry if I cant figure it out but i will try my best to help:D
Divide 16 by 2 first following PEMDAS.
10 - 8
Solve
2
7 unit to the left, means it is 7 less than -1.
-1-7 = -8
Ans: -8
4 thousand hope this helped
