[Question]Nina enjoys keeping insects as pets. She has 3 spiders and 50 ants. Each spider has 8 eyes. Each ant has 2 eyes. How many eyes are there in total among Nina’s pet insects?
[Answer]The number of eyes from the spiders is 3 * 8 = 24 eyes. The number of eyes from the ants is 50 * 2 = 100 eyes. The total number of eyes among Nina’s insects is 24 + 100 = 124 eyes. The answer is 124.
Q: Bryan's score on a math exam is 20. Jen scored 10 more than Bryan while Sammy scored 2 fewer than Jen. If the math exam has 35 points in all, how many mistakes did Sammy make?
A: Jen scored 20 + 10 = 30 on the exam. Sammy scored two less, so his score was30 - 2 = 28. Thus, Sammy made 35 - 28 = 7 mistakes. The answer is 7.
Question: In a factory, there are 300 employees. 200 of them earn $12 per hour. Of the rest, 40 of them earn $14 per hour. All others earn $17 per hour. What is the cost to employ all these people for one 8-hour long shift?
Answer: The cost of the 200 employees is 200 employees * $12 / employee / hour = $2400 per hour. The cost of the 40 employees is 40 employees * $14 / employee / hour = $560 per hour. The rest means 300 employees - 200 employees - 40 employees = 60 employees. These 60 employees' employment costs are at 60 employees * $17 / employee / hour = $1020 per hour. So in total all employees earn $2400 / hour + $560 / hour + $1020 / hour = $3980 / hour. During an 8 - hour shift, this cost would be at 8 hours * $3980 / hour = $31840. The answer is 31840.
[Question]Two friends are racing three miles. The first one runs it in 21 minutes. The second one runs it in 24 minutes. If they keep up the same pace, how long combined will it take for them to run 5 miles each?
[Answer]The first one runs a mile in 7 minutes because 21 / 3 = 7. The second runs a mile in 8 minutes because 24 / 3 = 8. The first one would finish 5 miles in 35 minutes because 5 x 7 = 35. The second one would finish in 40 minutes because 5 x 8 = 40. It will take 75 minutes in total because 35 + 40 = 75. The answer is 75.
Q: The moon is made of 50% iron, 20% carbon, and the remainder is other elements. Mars weighs twice as much as the moon, but has the exact same composition. If Mars is 150 tons of other elements, how many tons does the moon weigh?
A: 30% of Mars is made up of other elements because 100 - 50 - 20 = 30. Mars weighs 500 tons because 150 / .3 = 500. The moon weighs 250 tons because 500 / 2 = 250. The answer is 250.
Question: In a Math competition, Sammy scored 20 points, Gab scored twice as many as Sammy's score, while Cher scored twice as many as Gab's score. If their opponent scored 85 points, how many more points do they have than their opponent?
Answer:
Gab scored 20 x 2 = 40 points. Cher scored 40 x 2 = 80 points. Their team scored 20 + 40 + 80 = 140 points. Therefore, they scored 140 - 85 = 55 more points than their opponent. The answer is 55.