The Cunninghams are moving across the country. Mr. Cunningham leaves 3.5 hours before Mrs. Cunningham. If he averages 50 mph and she averages 70 mph, how long will it take Mrs. Cunningham to overtake Mr. Cunningham?
2 Answers
Mrs Cunningham will take
Explanation:
Mr Cunningham is ahead of
Mrs Cunningham started.
Mrs Cunningham makes up
Therefore Mrs Cunningham will take
i.e
She will overtake him after
Explanation:
At the point where Mrs Cunningham overtakes Mr Cunningham, the distance they have travelled will be the same.
Let the time for Mrs C be
Mrs C:
Mr C will have taken
Mr C:
the distances travelled are the same
She will overtake him after