Problema Solution
43. Wendy and Rick left the library at noon and cycled 480 meters to the town hall. Wendy cycled at a speed of 80 meters per minute. Rick's speed was 20 meters per minute slower than Wendy's. After cycling 1/4 of the distance, Wendy stopped and waited for Rick to catch up with her. How many minutes did Wendy need to wait for Rick? Give you answer in minutes.
Answer provided by our tutors
1/4 of 480= (1/4)*480=120 meters.
Time taken by wendy to travel 120m= 120/80=1.5 minutes.
Time taken byRick to travel 120m= 120/60=2 minutes.
Wendy need to wait for rick= 2-1.5=0.5 minutes