Question

Steve's pet parakeet is 100 mm tall. It casts a shadow that is 250 mm long. A cockatiel sitting nextto the parakeet casts a shadow that is 450 mm long, How tall is the cockatiel?

Answer 1

We have the following relation

`(100)/(250)=(h)/(450)\rightarrow h=450\cdot(100)/(250)=450\cdot(2)/(5)=180`

therefore the cockatiel is 180mm tall