The ratio of green marbles to yellow marbles in toby's bag is equal yo 2: 3. what percent of the marbles are green marbles?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

42. if 20 men can eat 200 kg of wheat in 40 days, then 10 men can eat 300 kg of wheat in how many days? a) 120 days b) 60 days c) 80 days d) none of these

If twice a number is at least three less than four times the number, which of the following are true? let n represent the number.