Question: Maximoff's monthly bill is $60 per month. His monthly bill increased by thirty percent when he started working at home. How much is his total monthly bill working from home?
Answer: Step-by-step reasoning process: He pays an additional $60 x 0.30 = $18 on his monthly bill working from home. Therefore, the total amount he pays for his monthly bill working from home is $60 + $18 = $78.
So the answer is 78.

Question: Donny has $78 in his piggy bank. If Donny buys a kite for $8 and a frisbee for $9. How much money does Donny have left?
Answer: Step-by-step reasoning process: Donny has 78 - 8 = 70 after paying for the kite. He has 70 - 9 = $61 left after buying the frisbee as well as the kite.
So the answer is 61.

Question: A 220-liter barrel has a small leak. It lost 10% of its contents before anyone noticed. How many liters are left in the barrel?
Answer: Step-by-step reasoning process: The barrel lost 220 * 10 / 100 = 22 liters before anyone noticed. So, 220 – 22 = 198 liters are left in the barrel.
So the answer is 198.

Question: Rachel is 4 years older than Leah. If the sum of their ages is 34, how old is Rachel?
Answer:
Step-by-step reasoning process: If Rachel and Leah have the same age, then the sum of their ages would be 34 - 4 = 30. So Leah would be 30 / 2 = 15 years old. Hence, Rachel is 15 + 4 = 19 years old.
So the answer is 19.