4th grade math
posted by Hassan .
Rodney is three times as old as his sister. Ayear ago he was four times as old. How old are rodney and his sister now?

R=3S
R1=4(S1)
Does that help? 
3 x 3 = 9
2 x 4 = 8
posted by Hassan .
Rodney is three times as old as his sister. Ayear ago he was four times as old. How old are rodney and his sister now?
R=3S
R1=4(S1)
Does that help?
3 x 3 = 9
2 x 4 = 8