Hot Air Balloons

September 24, 2018

Fall is a beautiful time of year to take a hot air balloon ride! You may not be able to take a balloon ride, but we hope you enjoy solving this week’s problems.

Melrose’s hot air balloon is a sphere of diameter 100 feet. How many cubic feet of air will Melrose’s hot air balloon hold when completely filled? Express your answer as a decimal to the nearest tenth.

 

Coco takes a hot air balloon trip over part of the Alleghany Mountains with her dad. They travel at an average speed of 40 mi/h for 120 miles before they land to take a 45-minute lunch break. After lunch, they fly 175 miles at an average speed of 35 mi/h. Including, the lunch break, how many hours was their entire trip?  Express your answer as a decimal to the nearest hundredth.

 

Rhonda found that 10 super-sized helium balloons provide just enough lift to carry her 3-pound toy.  At that same rate, how many super-sized balloons would be required to carry Rhonda’s 81-pound Alaskan malamute?

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