At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get our expert's

answer on brainly

SEE EXPERT ANSWER

Get your **free** account and access **expert** answers to this and **thousands** of other questions.

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your **free** account and access **expert** answers to this and **thousands** of other questions

right so this is a bit harder to parse

so basically the second train has caught up once the distances they've traveled are exactly equal

ok so in one hour, once the second train leaves, the first train has a 60mph*1hr head start

so it's gone exactly 60 miles already

so from that point on, we're basically solving for some time T

70*T - 60*T = 60 (the head start being 60mph)

or in time T, when they have traveled the same distance, we know that 70*T = 60 + 60T

so 70T - 60T = 60 = 10T

so 10T = 60

In six hours, they would have traveled the same distance

so now let's check this:

In 6 hours from the original 1 hour, the first train has traveled 7hours

so it's traveled 7 hours * 60mp/h = 420 miles

the second train has traveled 6 hours total. so 6 hours * 70mph = 420miles

which is exactly the point the second train passes the first

make sense?

yep!!

awesome =)