On a sunny day an office building casts a shadow that is 80 feet long. At the same time, a 5 foot person casts a 6 foot shadow. Determine the height of the office building to the nearest foot.

Let's set up a proportion.

5/6 = x/80

Cross multiply:

6x = 400
x = 400/6
x = ?

66.6

To determine the height of the office building, we can set up a proportion between the height of the building and the length of its shadow:

Height of building / Length of building's shadow = Height of person / Length of person's shadow

Let's denote the height of the building as "x". Rearranging the proportion, we have:

x / 80 = 5 / 6

To solve for "x", we can cross-multiply and then divide:

x * 6 = 80 * 5
6x = 400
x = 400 / 6
x ≈ 66.67

Therefore, the height of the office building is approximately 66.67 feet.

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