Which ordered pair (a, b) is a solution to the given system ? 2a-5b=1 3a+5b=14

2a -  5b = 1
3a + 5b = 14
add
5a = 15
  a = 3

2(3) -  5b = 1
6 - 5b = 1
5b = 5
  b = 1

answer
(3, 1 ) is a solution 

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.