Question: In Hawaii, they normally get an average of 2 inches of rain a day. With 100 days left in the year, they've gotten 430 inches of rain. How many inches on average do they need to finish the year with the normal average?
Answer: They need 730 inches of rain a year to average 2 inches a day because 365 x 2 = 730. They need 300 more inches because 730 - 430 = 300. They need 3 inches a day because 300 / 100 = 3. The answer is 3.
[Question]If Amanda can run the length of a football field 2000 meters in length in 2 hours, how long would it take her to run the length of a 10000-meter track at the same speed?
[Answer]Running the length of a football field 2000 meters in 2 hours is a speed of 2000 / 2 = 1000 meters per hour. At the same speed, Amanda will run the length of a 10000 - meter track in 10000 / 1000 = 10 hours. The answer is 10.
Q: Marjorie works as a baker. Every day, she makes twice as many cakes as she did the day before. On the sixth day, she makes 320 cakes. How many cakes did Marjorie make on the first day?
A: As the number of cakes doubles each day, Marjorie must have made 320 cakes / 2 = 160 cakes on the fifth day. So on the fourth day, she must have made 160 cakes / 2 = 80 cakes. This means that on the third day, she made 80 cakes / 2 = 40 cakes. On the second day, she made 40 cakes / 2 = 20 cakes. So on the first day, she made 20 cakes / 2 = 10 cakes. The answer is 10.
Question: Matthew, Patrick and Alvin are eating dinner together. Matthew eats three times as many egg rolls as Patrick eats. Patrick eats half as many egg rolls as Alvin eats. If Alvin ate 4 egg rolls, how many did Matthew eat?
Answer: Patrick eats 1 / 2 of the 4 egg rolls that Alvin eats, 1 / 2 x 4 = 2 egg rolls. Matthew eats 3x as many egg rolls as Patrick eats, 3 x 2 = 6 egg rolls that Matthew eats. The answer is 6.
[Question]Jeanine bought 18 pencils and Clare bought half as many pencils. If Jeanine gave one third of his pencils to Abby, how many more pencils than Clare does Jeanine have now?
[Answer]Clare bought half of 18 pencils which is 18 / 2 = 9 pencils. One - third of 18 pencils is (1 / 3) * 18 = 6 pencils. Jeanine gave out 6 pencils so he has 18 - 6 = 12 pencils left. Jeanine now has 12 - 9 = 3 pencils. The answer is 3.
[Question]Felicia is baking a cake. She needs 2 cups of flour, a cup of white sugar, a 1/4 cup of brown sugar, and a 1/2 cup of oil. Her only measuring scoop is 1/4 cup. How many times does she fill it to complete the measurements?
[Answer]
She fills it 8 times for the flour because 2 / (1 / 4) = 8. She fills it 4 times for the white sugar because 1 / (1 / 4) = 4. She fills is 2 times for the oil because (1 / 2) / (1 / 4) = 2. She fills it 1 time for the brown sugar because she needs exactly 1 / 4 of a cup. She fills is 15 times because 8 + 4 + 2 + 1 equals 15. The answer is 15.