Question: Happy Island has 60 turtles. This means there are 10 more than 2 times as many turtles on Happy Island as on Lonely Island. How many turtles are there on Lonely Island?
Answer with step-by-step thinking: After subtracting 10 from the number of turtles on Happy Island, we get 60 - 10 = 50 turtles. Dividing this number by two, we find that the number of turtles on Lonely Island is 50 / 2 = 25 turtles.
So the answer is 25.


Question: Carl is taking a class where the whole grade is based on four tests that are graded out of 100. He got an 80, a 75 and a 90 on his first three tests. If he wants an 85 average for the class, what is the minimum grade he needs to get on his last test?
Answer with step-by-step thinking: First, find the total number of points Carl needs to earn across all the tests by multiplying his desired average by the number of tests: 85 * 4 = 340 marks. Then subtract all Carl's previous test scores to find the last score he needs to earn: 340 - 80 - 75 - 90 = 95 marks.
So the answer is 95.


Question: Yesterday, Bruce and Michael were playing football in the park. Bruce scored 4 goals While Michael scored 3 times more than Bruce. How many goals did Bruce and Michael both score?
Answer with step-by-step thinking:
Bruce scored 4 goals. Scoring 3 times more than Bruce, Michael scored 4 * 3 = 12 goals. Both, Bruce and Michael scored 12 + 4 = 16 goals.
So the answer is 16.