Posted by S on Tuesday, September 28, 2010 at 6:44pm.
Melissa collected 3 kinds of leaves when she was out walking elm, maple, and oak. She has 2xs as many maple leaves as elm leaves and 5xs as many oak leaves as elm leaves. Altogether, she has 32 leaves. How many of each kind does she have?

math  Reiny, Tuesday, September 28, 2010 at 7:01pm
elm leaves === x
maple ==== 2x
oak ===== 5x
solve for x
x + 2x + 5x = 32 
math  Alex, Tuesday, September 28, 2010 at 7:03pm
E = Elm, M = Maple, O = Oak
M = 2E
O = 5E
O + M + E = 32
Now you just guess & check. Try using the number 8 somewhere; I'm not going to do ALL of it. 
math  mia, Thursday, October 7, 2010 at 4:51pm
o=20 m=4 e=8