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The graph above shows the height of the tide

This topic has 1 expert reply and 1 member reply
boomgoesthegmat Senior | Next Rank: 100 Posts Default Avatar
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The graph above shows the height of the tide

Post Sun May 01, 2016 9:30 am
ttp://postimg.org/image/tipye40kh/" target="_blank">

The graph above shows the height of the tide, in feet, above or below a baseline. Which of the following is closest to the difference, in feet, between the heights of the highest and lowest tides on July 13 at Bay Cove?

A) 1.7
B) 1.9
C) 2.2
D) 2.5
E) 2.7

OA: E

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OptimusPrep Master | Next Rank: 500 Posts
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Post Mon May 02, 2016 7:18 pm
boomgoesthegmat wrote:
ttp://postimg.org/image/tipye40kh/" target="_blank">

The graph above shows the height of the tide, in feet, above or below a baseline. Which of the following is closest to the difference, in feet, between the heights of the highest and lowest tides on July 13 at Bay Cove?

A) 1.7
B) 1.9
C) 2.2
D) 2.5
E) 2.7

OA: E
From the graph, we can see the following information:

Highest tide at 11:30 AM = 2.2 ft
Lowest tide at 6:00 PM = - 0.5 ft

Difference = 2.2 - (-0.5) = 2.7 ft

Correct Option: E

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Post Sun May 01, 2016 10:45 pm
Hi boomgoesthegmat,

This question is really just about pulling the relevant information from the chart and doing the basic arithmetic to answer the question that's asked.

We're asked to choose the answer that closest to the DIFFERENCE between the highest tide and lowest tide in the table.

Highest Tide: 2.2 ft
Lowest Tide: -0.5 ft

Difference = (2.2) - (-0.5) = 2.7 ft

Final Answer: E

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