Question

The drama group has 90 minutes to practice two scenes. They want to practice the pirate scene 4 times, and each time takes 13 minutes. The mermaid scene takes 7 minutes.

How many full times can the group practice the mermaid scene?

Answer 1

Answer: 5

======================================================

Step-by-step explanation:

They want to practice the pirate scene 4 times, and each session of that takes 13 minutes. So they need 4*13 = 52 minutes for all of the pirate rehearsals.

This leaves 90 - 52 = 38 minutes to practice the mermaid scenes.

Each mermaid scene takes 7 minutes, so we divide 38 over 7 getting

38/7 = 5 remainder 3

They can do 5 full practices of the mermaid scene, but won't have enough time for the 6th practice (they'll come up 7-3 = 4 minutes short). Put another way, if they had an extra 4 minutes and had 38+4 = 42 minutes left then they would have 42/7 = 6 full practices, but unfortunately they don't have this extra time.

Using a calculator, we see that 38/7 = 5.42857 approximately which rounds down to 5. We do not round to 6 as explained in the last paragraph.

Answer 2

5 times

Step-by-step explanation:

The class in 90min long, and they want to practice the pirate scene 4 times. Each time is 13min, so we need to multiply 13 by 4 to see how long that will take. 13 X 4 = 52. So 52min to do the pirate scene. Now we need to subtract that from the total class time. So we do 90-52=38. Now we want to find out how many times we can do the mermaid scene. Since it takes 7min each time, we want to divide how much time we have left, (38) by the time it takes per scene (7). 38 divided by 7 is equal to 5.42. This rounds down to 5, therefore they can practice the scene 5 times