Q: Mary just held tryouts for the high school band. 80% of the 20 flutes got in, half the 30 clarinets got in, 1/3 of the 60 trumpets got in, and 1/10th of the 20 pianists got in. How many people are in the band total?
A: First find the total number of flutes who were accepted: 20 flutes * .8 = 16 flutes. Then find the total number of clarinets who were accepted: 30 clarinets * .5 = 15 clarinets. Then find the total number of trumpets who were accepted: 60 trumpets * 1 / 3 = 20 trumpets. Then find the total number of pianists who were accepted: 20 pianists * 1 / 10 = 2 pianists. Then add the number of each kind of instrument to find the total number of people in the band: 16 flutes + 15 clarinets + 20 trumpets + 2 pianists = 53 people. The answer is 53.
Question: At the patisserie, a single layer cake slice is $4 and a double layer cake slice is $7. Dusty buys 7 single layer cake slices and 5 double layer cake slices. If he pays with a $100 bill, how much change does he receive?
Answer: Single layer cake slices cost $4 x 7 = $28. Double layer cake slices cost $7 x 5 = $35. All the cake slices together cost $28 + $35 = $63. He will receive change of $100 - $63 = $37. The answer is 37.
[Question]Darlene's car gets 20 miles/gallon. Martha's car gets half as many miles per gallon as Darlene’s car. How many gallons does Martha’s car require to make a 300-mile trip?
[Answer]Martha’s car gets 20 / 2 = 10 miles per gallon. Total gallons Martha’s car requires is 300 / 10 = 30 gallons. The answer is 30.
Q: Tom and his friends were filling up water balloons. Tom filled up 3 times as many water balloons as Luke. Luke filled up one fourth as many balloons as Anthony. If Anthony filled up 44 water balloons, how many did Tom fill up?
A: Luke filled up 44 / 4 = 11 water balloons. Tom filled up 11 * 3 = 33 water balloons. The answer is 33.
Question: Ernie's income is 4/5 of what it used to be and Jack's income is now twice what Ernie used to make. How much do they earn combined if Ernie used to make $6000?
Answer: If Ernie's income is 4 / 5 of what it used to be, she is earning 4 / 5 * $6000 = $4800 now. Jack's income is now twice what Ernie used to make a total of 2 * $6000 = $12000. Combined, Ernie and Jack are making $12000 + $4800 = $16800. The answer is 16800.
Q: Marta works on her grandparent's farm to raise money for a new phone. So far, she has collected $240. For every hour she works, she receives $10. Her grandmother often gives her tips, and she has collected $50 in tips in total. How many hours has Marta worked on the farm so far?
A:
Ignoring tips, Marta earned $240 - $50 = $190. Therefore, she has worked 190 / 10 = 19 hours. The answer is 19.