Tracy is running a trail in hanna park she can run 1 mile in 10 minutes yanni is running the same trail as tracy johnny can run a mile in five minutes but starts running 20 minutes after tracy started on the trail if they started the trail from the same point how long will it take yanni to catch tracy

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling