math word problems

posted by .

Brenda left the hardware store and drove toward the recycling plant at an average speed of 20mph. Perry left one hour later and drove the same directions but with an average speed of 30 mph. find the number of hours Brenda drove before Perry caught up.

• math word problems -

let Brenda's time driving be t hrs
then Peryy drove for t-1 hrs.

20t = 30(t-1)
20t = 30t - 30
-10t = -30
t = 3

I will leave it up to you to answer the actual question

Respond to this Question

 First Name School Subject Your Answer

Similar Questions

1. Science

Megan, Jose, Austin, and Timothy are driving from Atlanta to Orlando which is a total of four hundred miles. They each left at 6:45 a.m. Everyone has been driving at different average speeds. Figure out the average speed of each driver. …
2. Algebra II

Bill drove from Ajax to Bixby at an average speed of 50 mph. On the way back he drove at 60 mph. The total trip took 42/5 hours of driving time. Find the distance between the two cities.
3. Algebra1

1. A bicycle racer covers a 75 mile training route to prepare for an upcoming race. If the racer could increase his speed by 5 mph, he would complete the same course in 3/4 of the time. Find his average rate of speed. 2. Nina drove …
4. Math

Adam left the airport and traveled toward the Capital. Elisa left one hour later traveling 50 mph in an effort to catch up to Adam. After traveling for 4 hours Elisa finally caught up. What was Adam's average speed?
5. Algebra

Tom went on a 3 Day road trip in which he drove the same number of miles each day. He drove 42 mph the first day. He drove 48 mph the second day. On the last day he drove a x mph. His average speed for the whole trip was 47 mph. Find …
6. Algebra

Molly left home and drove toward the ferry office at an average speed of 27 mph. Mark left two hours later and drove in the same direction but with an average speed of 45 mph. How long did Molly drive before Mark caught up?
7. math

Jessica left the mall and drove toward the desert at an average speed of 40 mph. Shreya left one hour later and drove in the same direction but with an average speed of 60 mph. How long did
8. math

If I drove 416 miles per hour at a an average speed of52 and I left at1:00 when should I arrive ?
9. Math

Emilio left Main Road at 8 A.M and arrived at Lame Lane at 2 P.M. His average for the whole journey was 60 mph. For the first 70% of the trip, he drove at an average speed of 65 mph. For the next 25% of the remaining trip, his average …
10. Algebra II

Michael and his sister Jane left their house at the same time going in the opposite direction. Michael drove at an average speed of 40 mph, while Jane drove at an average speed of 35 mph. After how many hours were they 400 miles apart?

More Similar Questions