U didn't mention the following?!?!
so u would answer it like this car =50MILES PER HOUR AND IN 30 MINUTES SPEEDS UP = 70 MPH U WANT TO FIND OUT IN THE 30 MINUTES HOW DID IT GO TO 50 TO 70 SO YOU 50+?=70
I will look into the day I will get to our place in about two weeks so that you could come over tomorrow to help us out with your work tomorrow morning