In a middle school with 200 students there are 40% girls. 20% of the students wear glasses. It is also known that 10% of the boys wear glasses. 1. How many boys are in this school? 2. How many girls don’t wear glasses 3. How many students are boys and wear glasses?

1) 120

2) 60

3) 20

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.

i do not know the answer

step-by-step explanation: