I believe you'd need the price values of both adult tickets and child tickets to correctly solve
I would go with D. Hope that helps :)
Step-by-step explanation:
The number of people to paint the bridge is inversely proportional to the number of hours it takes.
(If there are more people, it will take less time etc.)
9 people can paint the bridge in 5 hours.
=> 2 people can paint the bridge in 5 * (9/2) = 22.5 hours.
Base area = 6 ( 1/2 x 6 x 5.2) = 93.6 cm²
Volume = base area x height = 93.6 x 17 = 1591.2cm ³
-------------------------------------------
Answer: Volume = 1591.2 cm³
-------------------------------------------