Question: The difference between the number of boys and girls in a tree planting event is 400. If there are 600 boys at the event, and the number of girls is more than the number of boys, what's 60% of the total number of boys and girls at the event?
Answer: If there are 600 boys at the event, and the difference between boys and girls is 400, there are 600 + 400 = 1000 girls. The total number of boys and girls at the event is 1000 + 600 = 1600. 60% of the total number of boys and girls at the event is 60 / 100 * 1600 = 960. The answer is 960.

Question: Yanna bought ten shirts at $5 each and three pairs of sandals at $3 each. How much change did she get back if she gave a one hundred dollar bill?
Answer: Ten shirts cost 10 x $5 = $50. And, three pairs of sandals cost 3 x $3 = $9. Thus, she spent $50 + $9 = $59. Therefore, she got back change of $100 - $59 = $41. The answer is 41.

Question: Nina makes one-of-a-kind jewelry and sells it at a local boutique. She charges $25.00 for her necklaces, $15.00 for bracelets and $10.00 for a pair of earrings. Over the weekend, she sold 5 necklaces, 10 bracelets, 20 earrings, and received 2 orders for a complete jewelry ensemble that Nina charged $45.00 for. How much money did she make over the weekend?
Answer: She sold 5 necklaces at $25.00 apiece for a total of 5 * 25 = $125.00. She sold 10 bracelets for $15.00 each for a total of 10 * 15 = $150.00. She sold 20 earrings for $10.00 a pair for a total of 20 * 10 = $200.00. She sold 2 ensembles for $45.00 each for a total of 2 * 45 = $90.00. All total she made 125 + 150 + 200 + 90 = $565.00. The answer is 565.

Question: A bird is building a nest from twigs. The bird has put twelve twigs together already to make a circle. For each twig it placed into the circle, it wants to weave in six more twigs to fill out the nest. It knows a tree that has dropped a third of the twigs it needs. How many twigs will the bird still need to find to finish its nest?
Answer:
The bird wants 12 * 6 = 72 twigs to add to the nest. It knows a tree that has dropped 72 * 1 / 3 = 24 twigs. Thus, the bird will still need 72 - 24 = 48 twigs to finish the nest. The answer is 48.