Question

Ryan's final exam in math had two parts. He had a total of 60 minutes to complete the entire exam. He spent 20 minutes on Part 1 of the exam. Write and solve an equation to show how much time he had left to complete Part 2.

A) m − 20 = 60; m = 80 minutes
B) 20m = 60; m = 3 minutes
C) m over 20 equals 60; m = 1,200 minutes

Answer 1

Answer: D) 40 minutes

Explanation:

Answers A, B, & C are incorrect because if he only had 60 minutes and he had 2 parts, with the first part being 20 minutes, then you have to solve the second part. To do that you have to subtract the first part (20 minutes) from the 60 minutes, to get 40, so he had 40 minutes left to complete part 2.

Answer 2

Ryan has 40 min left for part 2.

Explanation:

Now we have to,

→ find the time left to complete part 2.

Forming the equation,

→ m + 20 = 60

Then required value of m will be,

→ m + 20 = 60

→ m = 60 - 20

→ [ m = 40 ]

Hence, he has 40 minutes left.