15 liters of water are poured into an aquarium that`s 70cm long, 30cm wide, and 40cm high. How many cm will the water level in the aquarium rise due to this added water?

(1 liter = 1,000cm³)

If all of a roofing company`s 6 workers are required to staff 2 roofing crews, how many workers need to be added during the busy season so they can send 4 complete crews out on jobs?

On average, the center for a basketball team hits 42% of his shots while a guard on the same team hits 49% of his shots. If the guard takes 140 shots this year, how many shots will the center have to take to score as many points as the guard assuming each shot is worth the same number of points?