Question: Mikaela earns $10 an hour tutoring. For the first month, she tutored for 35 hours and in the second month, she tutored 5 hours more than the first month. She spent 4/5 of her total earnings on her personal needs and saved the rest of the money. How much did she save?
Answer: Mikaela spent 35 + 5 = 40 hours in the second month. So, she tutored a total of 35 + 40 = 75 hours for the first two months. Thus, her total earning was 75 x $10 = $750. And, her total expenses was 4 / 5 x $750 = $600. Therefore, she saved an amount of $750 - $600 = $150. The answer is 150.

Question: On a four-day trip, Carrie drove 135 miles the first day, 124 miles more the second day, 159 miles the third day, and 189 miles the fourth day. If she had to charge her phone every 106 miles, how many times did she charge her phone for the whole trip?
Answer: Carrie drove 135 + 124 = 259 miles on the second day. Carrie drove 135 + 259 + 159 + 189 = 742 miles for the whole trip. Carries charged her phone 742 / 106 = 7 times. The answer is 7.

Question: On a farm, on average every 6 cows produce 108 liters of milk per week. In five weeks the cows produced 2160 liters of milk. How many cows are on the farm?
Answer: Per week, one cow produces 108 liters / 6 cows = 18 liters / cow. The cows produced 2160 liters of milk over 5 weeks. So we have 2160 liters / 18 liters / cow = 120 cows. Further, we have to divide 120 cows / 5 weeks = 24 cows. The answer is 24.

Question: Holden's current master bedroom is 309 sq ft and his master bath is 150 sq ft. If he wants to add a home office/personal gym divided space that is twice as large as his bedroom and bathroom, how much sq ft will this new room have?
Answer:
His bedroom is 309 sq ft and his bathroom is 150 sq ft so these two rooms are 309 + 150 = 459 sq ft. He wants the new room to be twice as large as his bedroom / bathroom that is 459 sq so the new room is 2 * 459 = 918 sq ft. The answer is 918.