1) John usually gets to work by driving 29 miles down Greenwich Street, which goes from his house to his office in a straight line. One week, Greenwich Street is closed due to construction, so John gets to work by driving 13 miles wests on 57th street, and then turning onto Harrison Street and driving north to his office. Approximately how many more miles does John have to drive by taking the detour?

Question

1) John usually gets to work by driving 29 miles down Greenwich Street, which goes from his house to his office in a straight line. One week, Greenwich Street is closed due to construction, so John gets to work by driving 13 miles wests on 57th street, and then turning onto Harrison Street and driving north to his office. Approximately how many more miles does John have to drive by taking the detour?
^18 miles
2) From 1980 to 2015, the student body at University A grew approximately 3% per year. By contrast, during the same period, the student body at University B grew by approxiametely 300 students per year. If both universities had exactly 10,000 students in 1980, what was the difference between the student bodies of University A and University B 2015?
^464

3) What is one possible solution to the equation 
6/(x+1)   minus 3/(x-1) equals 1/4?

bobpursley · Answer

1. second leg=sqrt(29^2-13^2)=25.9 tripexcess=25.9+13-29= not your answer 2. A=10000*1.03^35=28136 b=10000+35*300=you do it.

aline · Answer

How is number two possible?? 20,500? How?

Arora · Answer

Yes, University B will have 20,500 students. As Bob showed, University A will have 28,136 students. What your question asks for is the difference between them. What is that difference?
How did you arrive at the answer 464?