# 3rd grade math (not algebra!)

posted by on .

There are 18 bikes in a bike rack. There are 4 more blue bikes than yellow bikes and 2 less yellow bikes than green bikes. How many bikes of each color are in the rack?

• 3rd grade math (not algebra!) - ,

4 yellow bikes
8 blue bikes
6 green bikes

4+8+6=18

• 3rd grade math (not algebra!) - ,

can you post how you solved it...I can
solve it using algebra.. but can't figure it out otherwise!!!

• 3rd grade math (not algebra!) - ,

Ehh I just knew

• 3rd grade math (not algebra!) - ,

There is 10 blue bikes 6 green bikes and 2 yellow bikes

• 3rd grade math (not algebra!) - ,

from the information above:

I blue = yellow + 4
II yellow = green - 2
OR yellow +2 = green

and we know that
III yellow + blue + green = 18

now insert upper expressions into the III equation:

yellow + (yellow +4) + (yellow +2) = 18

3 yellow + 6 = 18

--> yellow = 4

insert 4 into upper equation and you will get
blue= 4+4
green= 4+2

• 3rd grade math (not algebra!) - ,

18 bikes in all. 4 more blue than yellow, 2 less yellow than green, how many green bikes are there?