Setting up and solving proportions for real-world problems

Which picture would be best for the scenario?

A lamppost casts a shadow that's 15 ft. long and John casts a shadow that is 7.2 ft long. If John is 6 ft. tall, how tall is the lamppost?

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A lamppost casts a shadow that's 15 ft. long and John casts a shadow that is 7.2 ft long. If John is 6 ft. tall, how tall is the lamppost?

• 12.5 ft.

• 18 ft.

• 2.88 ft.

Which picture would be best for the scenario?

John is 6 ft. tall and is standing 5 ft. from a lamppost. If John's shadow is 4 ft. long, how tall is the lamppost?

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John is 6 ft. tall and is standing 5 ft. from a lamppost. If John's shadow is 4 ft. long, how tall is the lamppost?

• 13.5 ft.

• 6 ft.

• 2.67 ft.

Which picture would be best for the scenario?

To estimate the height of a lamppost, John places a mirror between him and the post. If John, who is 6 ft. tall, is standing 4 ft. from the mirror and the mirror is 8.4 ft from the post, how tall is the lamppost?

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To estimate the height of a lamppost, John places a mirror between him and the post. If John, who is 6 ft. tall, is standing 4 ft. from the mirror and the mirror is 8.4 ft from the post, how tall is the lamppost?

• 12.6 ft.

• 5.6 ft.

• 2.86 ft.

Which picture would be best for the scenario?

John is 6 ft. tall and is standing close to a 14 ft. lamppost. If John's shadow is 4 ft. long, how far is he from the lamppost?

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John is 6 ft. tall and is standing close to a 14 ft. lamppost. If John's shadow is 4 ft. long, how far is he from the lamppost?

• 5.3 ft.

• 9.3 ft.

• 55.3 ft.

Which picture would be best for the scenario?

If John, who is 6 ft. tall, places a mirror between him and a 14 ft. lamppost, and he is standing 9 ft from the mirror, how far is the mirror from the lamppost?

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If John, who is 6 ft. tall, places a mirror between him and a 14 ft. lamppost, and he is standing 9 ft from the mirror, how far is the mirror from the lamppost?

• 21 ft.

• 9.3 ft.

• 3.86 ft.