Patrick B. answered 10/20/19
Tutor
4.7
(31)
Math and computer tutor/teacher
3*r + 3*(r+20) = 270
3*r + 3*r + 60 = 270
6r + 60 = 270
6r = 210
r = 35
35 mph and 55 mph
Ben K.
asked 09/20/18
Patrick B. answered 10/20/19
Math and computer tutor/teacher
3*r + 3*(r+20) = 270
3*r + 3*r + 60 = 270
6r + 60 = 270
6r = 210
r = 35
35 mph and 55 mph
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