Two thirds of a number decreased by eighteen is negative twenty-four.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?