Cassandra is two thirds as old as Jeremy. Three years ago she was half as old as Jeremy. How old are Cassandra and Jeremy?
I got this question wrong and was wondering what I did wrong. This is what I did.
Now 3 years ago
Cassandra| C | C-3
Jeremy | J | J-3
C=2/3J
C-3=1/2(J-3)
(C-3=1/2J-3/2) x 2
2C-6=J-3
2(2/3J)-6=j-3
4/3J-6=J-3
3 x (4/3J -6=J-3)
4J-18=J-9
+18 +18
4J=J+9
-J -J
3J=9 Divide everything by 3
J=3
C=2/3(3)
C=2
Jeremy is 3 years old
Cassandra is 2 years old
2 answers
Oh I think I know what I did wrong now
j three fourth as old as m in 20 years j will be seven eight as old as m how old is each now
2 answers