A6 ft tall tent standing next to a cardboard box casts a 9ft shadow. if the cardboard box cast a shadow that is 6ft long then how tall is it

The cardboard box is 4  ft. 

6ft/9 = x/6 use cross multiplication to solve this 

you'll end up with 9x=36 

simplify and get 4 

The cardboard box would be 3 ft because the text is 6 ft and it cast a 9 ft and if you take 3 from 9 you get 6 so take 3 from the 6 ft shadow and you get 3 ft 

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