Omar has a new credit card. He earns 300 reward points for every 100 dollars he spends. If Omar earned 11800 reward points, how much money did he spend?

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 %

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce