#18- Evardo paid $1.12 for a dozen eggs. Write and solve proportion to determine the cost of 3 eggs Evarado needs for a recipe.
Letxbe- the cost/egg
Letybe-the cost/3 eggs
Answer-Evarado's recipe will cost him $0.279 for 3 eggs.
#22- At the Copy Shoppe,18 copies cost $1.08. At that rate how much will 40 copies cost.
Letxbe- the cost/copy
Letybe- the cost/40 copies
Answer-40 copies will cost $2.40 .
#19-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?
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