Question

Evan's favorite hobby is origami. He plans to make 100 paper cranes to hang from the ceiling of his bedroom. Yesterday, he made 28 paper cranes in 4 hours. Today, he made 21 paper cranes at the same rate. How long did Evan spend making paper cranes today?

Answer 1

Answer:

Step-by-step explanation:

all you have to do is add 100+28+21

Answer 2

Given:  Evan plans to make 100 paper cranes to hang from the ceiling of his bedroom. Yesterday, he made 28 paper cranes in 4 hours. Today, he made 21 paper cranes at the same rate.

To find: Time Evan spent making paper cranes today.

Solution:

• If Evan made 28 paper cranes in 4 hours, the number of paper cranes he made in 1 hour would be equal to,

        $\frac{28}{4} = 7$

• So, Evan takes 1 hour to make 7 paper cranes.
• Since he made 21 paper cranes at the same rate, the time taken by him would be calculated as,

        $\frac{21}{7} = 3$

• This means in order to make 21 paper cranes, Evan would require 3 hours.

Therefore, Evan spent 3 hours making paper cranes today.