Inactive Tutor answered 06/16/17
Tutor
New to Wyzant
s represents Sara's speed
Jim:
138 = (s + 5)(t)
138 / (x + 5) = t
Sara
123 = (s)(t)
123 / s= t
138 / (s + 5) = 123 / s
Can you solve for s and answer?