Question

Equilateral triangle RST is similar to the equilateral triangle DEF with the ratio of similarity 26. Which is equivalent to
3RS + 5ST over 6DE + 7EF

16
14
12
8

Answer 1

is that the full question?

Answer 2

yea

Answer 3

what is the ratio?

Answer 4

i gues there is smthing missing

Answer 5

It's equilateral, so RS=ST (call this a) and DE=EF (call this b)
a=26b

(3a+5a)/(6b+7b)
=8a/(13b)
=8(26b)/13b
=8*2*13b/(13b)
=16