Bobby swims 3 laps every day during the summer. It takes him 15 seconds to swim from the ladder to the swimming lane, and he swims for a total of 135 seconds. The expression below can be used to find s, the number of seconds it takes Bobby to swim each lap.

135 = 3s + 15

How long does it take Bobby to swim each lap?

A. 40 seconds
B. 50 seconds
C. 360 seconds
D. 450 seconds

Question

Bobby swims 3 laps every day during the summer. It takes him 15 seconds to swim from the ladder to the swimming lane, and he swims for a total of 135 seconds. The expression below can be used to find s, the number of seconds it takes Bobby to swim each lap.

135 = 3s + 15

How long does it take Bobby to swim each lap?

	A.	40 seconds
	B.	50 seconds
	C.	360 seconds
	D.	450 seconds

anonymous · Answer

is it a

anonymous · Answer

It's A. 135 = 3s + 15
         -15             - 15
          120 = 3s
          120/3 = 40