Liz Z. answered 12/03/23
Full Time secondary math tutor. I love math, and you can too!
I would set this up as a ratio. If they travel 50 miles in 90 minutes, they travel 80 miles in how many minutes? Call the unknown minutes t. Then
50/90=80/t
Cross multiply to get 50t=7200
Divide both sides by 50 to get t=144 minutes.
Hope this helps, and have fun mathing!
Liz Z.