Carlos didn't earn enough for the last apartment he was looking at, so he is still searching. He found one that costs $625 per m
onth, but they require that the cost of rent be no greater that a third of his monthly income. If he must earn at least 3 times the cost of his rent, what is the smallest amount of money that Carlos needs to make per month to be approved to move in?
You can see that one of the rings was originally $24 and on sale it is $18 which is 3/4 or 0.75 of 24. Then if you check that relationship with the other ones where you take the orginal price and find 3/4 or 0.75 of it you get all of the sale prices.