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?
Answers
Ms. Sue
What answer do you get?
Eden S.
360
Eden S.
is that correct
Ms. Sue
No.
135 = 3s + 15
Subtract 15 from both sides.
120 = 3s
Divide both sides by 3.
120/3 = s
? = s
135 = 3s + 15
Subtract 15 from both sides.
120 = 3s
Divide both sides by 3.
120/3 = s
? = s
Eden S.
40=s
Eden S.
thank you