For the celebration, the Professor bought balloons of three colors: blue, red, and yellow. In total, he bought balloons. The number of yellow and blue balloons is , and the number of red and blue balloons is .
For the celebration, the Professor bought balloons of three colors: blue, red, and yellow. In total, he bought balloons. The number of yellow and blue balloons is , and the number of red and blue balloons is .
You are going to toast some slices of bread for an upcoming party. You have a frying pan that can hold at most toasts at the same time. Toasting one side of a toast takes minutes.