A shark was swimming 33ft below the surface of the water. It swam up 18ft to feed
on some fish, then dove down 5ft. Where is the shark now?

Respuesta :

The shark is now at 20 feet
Since the top of the water is zero we need to subtract when it swims up and add on the way down do:

33 -18 = 15
15 + 5 = 20

Answer: 20ft