if you and your friend went swimming for 10 hours, then came back because they forgot something, then swam for 11 hours, how many hours would you've been swimming for?

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Respuesta :

Answer:

21 hours

Step-by-step explanation:

You and your friend swam for 10 hours then took a break then swam for 11 so 10+11=21 so you and your friend swam for 21 hours all together.