Determine the whole in each situation. According to a survey, 70 middle school students, or 35%, walk to school. How many students attend the middle school?

200

Step-by-step explanation:

35% = 70

1% = 70 ÷ 35 = 2

Find out 100% which is everything.

100% = 2 x 100 = 200

312312

step-by-step explanation:

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %