Question

You are completing a math assessment the number of questions you complete in the time it takes you to complete them have a proportional relationship as shown in the table. How much time does it take to complete five questions?

The table shows the number of questions, 2,5. And the time in minutes. 9,?. What would ‘?’ Be? Answer choices;
11 minutes and 30 seconds
22 minutes and 30 seconds
3 minutes
12 minutes

Answer 1

22 minutes and 30 seconds

Explanation:

We can represent 2 questions corresponding to 9 minutes in a ratio:

questions : minutes

2 : 9

We want to find the number of minutes it would take to complete 5 questions, so that means we need to multiply both sides of this ratio by a number such that the left side (# of questions) is 5. That number is 5/2.

q : m

2 : 9

× 5/2 × 5/2

5 : 22.5

We can see that 5 questions corresponds to 22.5 minutes, which we can represent as 22 minutes and 30 seconds (because there are 60 seconds in a minute and half of 60 is 30).