4) The ratio of commuter trains to all trains through the station is 10 to 13. On a given day, there are 21 non-commuter trains. How many commuter trains are there? 5) Becky is cutting wood. She is cutting a long board into two pieces with lengths in ratio 9 to 5. The longer piece is 54 inches. How long is the original board? 6) Becky is cutting another board that starts out at 88 inches. The ratio of the two pieces she gets is 5 to 6. How long is

Carl bought 19 apples of 2 different varieties to make a pie. The total cost of the apples was $5.10. Granny Smith apples cost $0.25 each and Gala apples cost $0.30 each. How many of each type of apple did Carl buy?

A stake 96 feet high casts a shadow 21 feet long at the same time that a tree casts a shadow 34 feet long. What is the height of the tree (to the nearest foot)?

2)Kira is participating in a cycle-a-thon to raise money for cancer research. The course that has been set up for participants to travel is in the shape of a triangle. Two of the angles of the course are 113 and 47, and the length of the side between these two angles is 4.1 km. For each kilometre that Kira cycles, she will raise $14.70 for cancer research. Determine how much money Kira raises if she cycles the course 3 times.