David and Jillian are playing a board game together. Jillian wants to trade her wool cards for David's ore cards. The double num
ber line shows that David will trade 3 ore cards to Jillian for 6 wool cards.Based on the ratio shown in the double number line, how many wool cards does Jillian need to trade for 4 ore cards?
so first we have to figure out how much wool card cost for 1 ore card. 6 divided by 3 is 2. That means for 1 ore card Jillian needs to give David 2 wool cards so if you multiply 4 times 2 you get 8. The 4 is representing the ore cards and since Jillian is trying to get 4 ore cards she has to add 2 , 4 times. 2+2+2+2 gives you 8 (2 x 4)
