a tree casts a shadow 24 feet long. at the same time, a vertical rod 20 feet high casts a shadow 12 feet long. How tall is the tree???

Question

anonymous · Answer

okay lets take this one step at a time.
a 20 feet high rod casts as 12 foot shadow.
what is the length of the shadow of the tree?

anonymous · Answer

set up a ratio

anonymous · Answer

it is 24 feet. 24 feet is two times 12 feet.
so the shadow of the tree is twice the length of the shadow of the rod.
what does this tell you about the height of the tree in relation to the height of the rod?

anonymous · Answer

still lost

anonymous · Answer

if your shadow is twice the length of your little brother's shadow, how much taller are you compared to your brother?

anonymous · Answer

does this mean that the tree is 48 feet tall???

anonymous · Answer

not the answer i got

anonymous · Answer

so what would it be???

anonymous · Answer

40 feet

12x =20*24 = 40

anonymous · Answer

$$x \over 24   $$ = $$20 \over 12$$ and corss multiply

anonymous · Answer

cross*

anonymous · Answer

thank you so much it was right!!!