Question

Candice leaves on a long trip driving at a steady rate of 25 miles per hour. Her sister Liz leaves from the same location traveling to the same destination 4 hours later. She drives at a steady rate of 50 miles per hour. How long after Liz leaves home will she catch up to Candice?

Answer 1

When Liz starts her trip, Candice has already covered 25*4 = 100 miles.
The difference in their speeds is 50-25 = 25 mph.
So, Liz has to cover the 100 miles between them while gaining 25 miles per hour on Candice.
Can you take it from here? :)

Answer 2

how long does it take candice to catch up