A 30ft building casts a 42ft shadow. Sarah casts a 7ft shadow. The triangle formed by the building and its shadow is similar to the triangle formed by Sarah and her shadow. How tall is Sarah?
a. 4 ft
b. 6 ft
c. 5 ft

Question

A 30ft building casts a 42ft shadow. Sarah casts a 7ft shadow. The triangle formed by the building and its shadow is similar to the triangle formed by Sarah and her shadow. How tall is Sarah? 
a. 4 ft
b. 6 ft
c. 5 ft

anonymous · Answer

the equation is set up like this:  |dw:1401491309073:dw| Solve for x and your final answer will be 5 feet. :)