A public official wants to donate 5 new soccer balls per each class in two schools. Each school has 4 elementary school classes and 5 middle school classes. How many soccer balls would the public official donate in all? Give the rationale and then the answer.
Let's think step by step. Each school has 4 + 5 = 9 classes. So, there are a total of 9 x 2 = 18 classes for the 2 schools. Therefore, the public official donates a total of 18 x 5 = 90 soccer balls.. The answer is: 90.

Harry is traveling home on the bus. He has already been sat on the bus for 15 minutes, and he knows the rest of the journey will take another 25 minutes. The walk from the bus stop to his house will take half the amount of time the bus journey took. In total, how many minutes will Harry have spent traveling? Give the rationale and then the answer.
Let's think step by step. The bus journey takes 15 + 25 = 40 minutes. The walk from the bus stop to his house will take Harry 40 / 2 = 20 minutes. So he will have been traveling for 40 + 20 = 60 minutes.. The answer is: 60.

Mike and Ted planted tomatoes. In the morning, Mike planted 50 tomato seeds while Ted planted twice as much as Mike. In the afternoon, Mike planted 60 tomato seeds while Ted planted 20 fewer tomato seeds than Mike. How many tomato seeds did they plant altogether? Give the rationale and then the answer.
Let's think step by step. Ted planted 2 x 50 = 100 tomato seeds. So, Mike and Ted planted 50 + 100 = 150 tomato seeds in the morning. In the afternoon, Ted planted 60 - 20 = 40 seeds. Thus, Mike and Ted planted 60 + 40 = 100 tomato seeds in the afternoon. Therefore, they planted 150 + 100 = 250 tomato seed altogether.. The answer is: 250.