Q: Hannah's AdBlock blocks all but 20% of ads, and 20% of the ads it doesn't block are actually interesting. What percentage of ads aren't interested and don't get blocked?
A: First find the percentage of ads that aren't interesting: 100% - 20% = 80%. Then multiply that percentage by the percentage of ads that don't get blocked to find the percentage of ads that meet both criteria: 80% * 20% = 16%. The answer is 16.
Question: Carter is twice as tall as his 24” tall dog. Betty is 12” shorter than Carter. How tall is Betty in feet?
Answer: Carter is twice as tall as 24” dog so he is 2 * 24 = 48”. Betty is 12” shorter than Carter so Betty is 48 - 12 = 36” tall. 12" is the same as 1 foot so Betty is 36 / 12 = 3 feet tall. The answer is 3.
[Question]My new house has 12 medium ceiling lights but I have seen small and large ceiling lights in other rooms. The small ones require 1 bulb, the medium ones require 2, and the large ones need 3 bulbs. How many bulbs should I buy if my wife says she saw twice as many large ceiling lights as medium ceiling lights and ten more small lights than medium ones?
[Answer]If the house has twice the number of large ones as medium ones then the house has 2 * 12 = 24 large ceiling lights. Similarly, if it has 10 more small ones than the 12 medium ones then it has 10 + 12 = 22 small ceiling lights. If one small ceiling light requires 1 bulb then 22 small ones will require 1 * 22 = 22 bulbs. If one medium ceiling light requires 2 bulbs then 12 medium ones will require 2 * 12 = 24 bulbs. If one large ceiling light requires 3 bulbs then 24 medium ones will require 3 * 24 = 72 bulbs. Therefore the house will require 22 bulbs for the small ones + 24 bulbs for the medium ones + 72 bulbs for the large ones, for a total of 22 + 24 + 72 = 118. The answer is 118.
Q: Tony goes on 5 rollercoasters while he is at the park. The first went 50 miles per hour. The second went 62 miles per hour. The third when 73 miles per hour. The fourth when 70 miles per hour. His average speed during the day was 59 miles per hour. How fast was the fifth coaster?
A: The total speed of all five coasters is 295 because 59 x 5 = 295. The final coaster went 40 miles per hour because 295 - 50 - 62 - 73 - 70 = 40. The answer is 40.
Question: Nigel won $45 but gave some away. His mother gave him $80 more. If now Nigel has $10 more than twice the amount he originally had, how much money did he give away?
Answer: Twice the amount Nigel originally had is 2 * 45 = 90 dollars. Now, Nigel has 10 dollars more, meaning that he has 10 + 90 = 100 dollars. Before his mother gave him 80 dollars, he had been left with 100 - 80 = 20 dollars. This means that Nigel gave away 45 - 20 = 25 dollars. The answer is 25.
Q: Diane bought twenty more apples than Cecile. If Cecile bought 15 apples, how many apples did they buy altogether?
A:
Diane bought 15 + 20 = 35 apples. Therefore, they bought 15 + 35 = 50 apples altogether. The answer is 50.