Paper costs $ 40 for 10 teams how much for 1 ream?

Ineed with this problem 21 show steps

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?

Pls brainliest will be awarded if answer is correct