Cristine bought a dozen lemons and gave 1/4 of them to her neighbor. How many lemons does Cristine have left?
Let's think: Cristine bought 1 x 12 = 12 lemons. She gave 12 x 1 / 4 = 3 lemons to her neighbor. So, Cristine is left with 12 - 3 = 9 lemons.. The answer is: 9.

Eric has 4 ninja throwing stars. His friend Chad has twice as many. Then Jeff bought 2 ninja stars from Chad. Jeff now has 6 throwing stars. How many ninja throwing stars do they have altogether?
Let's think: We know Eric has 4 stars and Chad has twice that amount, so Chad has 4 x 2 = 8 stars. Then Chad sells 2 of them to Jeff, so Chad has 8 – 2 = 6 stars. Altogether, Eric has 4 + Chad has 6 + Jeff has 6 = 16 stars.. The answer is: 16.

John can read a book 60% faster than his brother. If his brother takes 8 hours to read a book, how long would it take John to read 3 books?
Let's think: Reading 60% faster means John's brother takes 1 + .6 = 1.6 times as long as John to read. So John reads a book in 8 / 1.6 = 5 hours. So it would take John 5 * 3 = 15 hours to read 3 books.. The answer is: 15.

Sally bought 3 photograph frames, each costing her $3. She paid with a $20 bill. How much change did she get?
Let's think:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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She bought the frames for 3 × $3 = $9. Sally got $20 - $9 = $11 in change.. The answer is: 11.