Today, Bill is thirteen times as old as Pete. In nine years, Bill will be four times as old as Pete. How old will Pete be 2 years from today?
5
7
6
4
3
5
7
6
4
3
B=13P
B+9=4(P+9)
Substitute B=13P into the above equation:
13P+9=4P+36
13P-4P=27
9P=27
P=3
2 years from today, Pete will be 3+2 or 5 years old.
A
