Q: Mary had 6 lambs and 2 of the lambs had 2 babies each. She traded 3 lambs for one goat. One morning, she woke up and found an extra 7 lambs in the field. How many lambs does Mary have?
A: 2 of her lambs had 2 babies each so that adds 2 * 2 = 4 lambs. She starts with 6 and adds 4 baby lambs so she had 6 + 4 = 10 lambs. She traded 3 of those lambs for a goat so she has 10 - 3 = 7 lambs. She has 7 and woke up to find 7 more lambs in the field so she has a total of 7 + 7 = 14 lambs. The answer is 14.

Q: John has a donkey and an elephant. The elephant weighs 3 tons (a ton is 2000 pounds). The donkey weighs 90% less. What is their combined weight in pounds?
A: The elephant weighs 3 * 2000 = 6000 pounds. The donkey weighs 6000 * .9 = 5400 pounds less. So the donkey weighs 6000 - 5400 = 600 pounds. That means the combined weight is 600 + 6000 = 6600 pounds. The answer is 6600.

Q: Olivia earns $9 per hour. She worked 4 hours on Monday, 3 hours on Wednesday and 6 hours on Friday. How much money did Olivia make this week?
A:
Olivia made $9 * 4 hours = $36 on Monday. Olivia made $9 * 3 = $27 on Wednesday. Olivia made $9 * 6 hours = $54 on Friday. For the week Olivia made $36 + $27 + $54 = $117. The answer is 117.