Answer: time it will take him to 17.5 minutes to complete the test from start to finish
Step-by-step explanation:
During the standardized test, Paul answered the first 22 questions in 5 minutes.
If he answers 22 questions 5 minutes
He would answer one question in 5/22 = 0.227 minutes
He continues to answer questions at the same rate. This means that his unit rate of answering 1 question in 0.227 minutes is constant throughout the test.
Total number of questions on the test is 77. The time it will take him to complete the test from start to finish will be
Unit rate of answering questions × total number of questions
= 0.227 × 77 = 17.5 minutes
