## Francesca's Proportion Problems

18. Evarado paid $1.12 for a dozen eggs. Write and solve a proportion to determine the cost of the 3 eggs Evarado needs for a recipe.

Let x be the cost for 3 eggs

Steps: word ratio, ratio table, proportion, find x

The cost of the 3 eggs Evarado needs for a recipe is $0.28.

19. The ratio of an object's weight on Earth to its weight on the Moon is 6:1. The first person to walk on the Moon was Neil Armstrong. He weighed 165 pounds on Earth. How much did he weigh on the moon?

Let x be how much Neil Armstrong weighed on the moon

Steps: word ratio, ratio table, proportion, find x

Neil Armstrong weighed 27.5 pounds on the moon.

20. The ratio of the length of the actual height of a person to the length of their shadow cast is 1:3. At the same time, a lighthouse casts a shadow that is 600 meters long. How tall is the lighthouse?

http://upload.wikimedia.org/wikipedia/commons/5/56/Eierdoosmet10eierengevuld2010.jpg

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ReplyDeleteThe answer for the question is ...

ReplyDeleteLet "x" be the height of lighthouse

Steps: word ratio , ratio table , proportion , find x

Actual height | Shadow

1 3

x 600

3x = 600x 1

3x=600

/3 /3

x= 200

The light house is 200 meters tall .