If you have 1,000 lbs. of plastic resin and need to mix 4% of colorant to it, how much colorant would you need to
add?
A. 50 lbs. B. 80 lbs. C. 20 lbs. D. 40 lbs.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.