100 students are interviewed to see which of biology, chemistry or physics they prefer. 30 of the students are girls. 16 of the girls like biology best.
9 of the boys prefer physics.
2 out of the 34 who prefer chemistry are girls.
What percentage of the students prefer biology?

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16%

Step-by-step explanation:

16 girls like biology so 16/100=0.16 in order to get percentage multiply by 100 so 16%. Think you are missing some parts tho

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

20%

step-by-step explanation: