Question

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On Tuesday at 2 p.m., the ocean’s surface at the beach was at an elevation of 2.2 feet. Winston’s house is at an elevation of 12.1 feet. The elevation of his friend Tammy’s house is 3 1/2 times the elevation of Winston’s house.
A. How many times greater is the elevation of Winston’s house than the elevation of the ocean’s surface at 2 p.m.?
B. On Wednesday at 9 a.m., Winston went diving. Near the beach, the ocean’s surface was at an elevation of -2.5 feet. During his deepest dive, Winston reached an elevation that was 2 1/5 times the elevation of the ocean’s surface. What elevation did Winston reach during his deepest dive?
C. While diving, Winston stopped at a point located halfway between his deepest dive and the ocean’s surface. At what elevation was Winston when he stopped halfway?

Answer 1

ed an elevation of -50 feet.

C. How much deeper did Winston dive than the elevation of the ocean’s surface near the beach?

A. To determine how many times greater the elevation of Winston’s house is than the elevation of the ocean’s surface at 2 p.m we subtract the elevation of the ocean’s surface from the elevation of Winston’s house:

Elevation of Winston’s house = 12.1 feet

Elevation of ocean’s surface = 2.2 feet

12.1 - 2.2 = 9.9 feet

The elevation of Winston’s house is 9.9 feet greater than the elevation of the ocean’s surface at 2 p.m.

B. On Wednesday at 9 a.m the ocean’s surface was at an elevation of -2.5 feet. During his deepest dive Winston reached an elevation of -50 feet. To determine how much deeper Winston dove than the elevation of the ocean’s surface near the beach we subtract the elevation of the ocean’s surface from the elevation of his deepest dive:

Elevation of ocean’s surface = -2.5 feet

Deepest dive elevation = -50 feet

-50 - (-2.5) = -50 + 2.5 = -47.5 feet

Winston dove 47.5 feet deeper than the elevation of the ocean’s surface near the beach.

C. I apologize but there seems to be incomplete information after the word "reach". If you can provide me with the missing details I'll be happy to assist you with the calculation.