The coin collection has 60 quarters. This is 25% of the coins. How many coins are in this collection?

240

Step-by-step explanation:

If it is 25% then if you multiply by 4 the 25% becomes 100% so you also multiply 60 by 4 and get 240

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 %