Two vehicles start 300 miles apart and drive toward each other, one at 55 miles per hour and the other at 45 miles per hour. How long until they meet?

Correct answer to question 36 (Arithmetic Reasoning): 3 hours

Method

When two objects move toward each other the gap closes at the sum of their speeds. They close 55 + 45 = 100 miles every hour, so the 300 mile gap disappears after 300 divided by 100, or 3 hours.