Plz answer this 6th grade math question

$7.50

Step-by-step explanation:

, where x is the cost for three bottles of water.

4x=30

x=7.5

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 %

the answer is 54 sq. ft. i just did this question, on odyssey ware, and it was right. make brainliest.