Michael visited his grandparents. the total distance was 280 miles. by train, he could travel 90 miles per hour. by bus he could travel 60 miles per hour. how much time could michael save by taking the train?

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

do you mean add both of the equations together

because if you do the answer is 10x-5

step-by-step explanation: