PSAT  Math
posted by Tiger .
Hello, I am reviewing my psat and looking at the questions I got wrong. I can't understand how to do this problem.
Mike and paul left their houses at the same time for a fitness run to the park. Mike ran at an average speed of 7 miles per hour. Paul ran at an average speed of 5 miles per hour. Mike and Paul arrived at the park at the same time. If Mike ran 4 miles farther than Paul, how far, in miles did Mike run?

Mike's time equals Paul's time.
Let D = Paul's distance in miles
Mikes time = (D+4miles)/(7mph)
Paul's time = D/5mph
(D+4miles)/(7mph) = D/(5mph)
Ssolve for D, then find D + 4.
Respond to this Question
Similar Questions

Math; Algebra for PSAT
Jim can fill a pool carrying bucks of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 ½ hours. How quickly can all three fill the pool together? 
PSAT HS
How do i start studying for the PSATs which are in 1 week and a half? 
College Planning
We got our PSAT scores back today. I'm a bit concerned about my math score which was a 47 (470 on SAT). Are my other scores of a 61 (610) in writing and a 70 (700) in reading good enough to offset this, along a 4.2 GPA and leadership … 
math
A physical fitness association is including the mile run in its secondaryschool fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 450 seconds and a standard … 
PSAT /SAT
For the PSAT or SAT is there a vocab list that I can study from? 
ELEMENTARY
How to prepare PSAT test from 3rd grade 
Statistics
A physical fitness association is including the mile run in its secondaryschool fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 460 seconds and a standard … 
PSAT/NMSQT
Am I qualified for the national merit scholarship if I take this test during senior year or is it just junior year or is it both? 
English
What's the word with the meaning : A strange habit or characteristics that is seen as not important and not harming anyone. I am doing a prePSAT crossword puzzle and the word ends with e. Thank you! 
Math
6 cd+2b+9(cd+b/3)=A(3cd+b) I'm really sorry this question seems really hard to me. But what I got as an answer is 6, ohh and I have another question. Can you use the distributive property on this problem?