Question

In the pair of similar trapezoids, what is the length of side GF?

Answer 1

`(|EF|)/(|FG|)=(|AB|)/(|BC|)\\\\ (20)/(|GF|)=(40)/(30)\\ (20)/(|GF|)=(4)/(3)\\ 4|GF|=60\\ |GF|=15`