Answer:

1.) 37.5 calories are used by an adult who plays volleyball for 15 minutes

2.) 97.5 calories are used in standing for 1 hour and washing the dishes for 10 minutes

3.) 330 calories are used in running 20 miles in 16.5 minute

Step-by-step explanation:

1.) 2.5(15) = 37.5

2.) 1.20(60) = 72

2.55(10) = 25.5

72 + 26.5 = 97.5

3.) 16.5(20) = 330

btw im not sure if its right, i just answer it manually

hope it would help :))