The train ride takes Andrew 2 * 10 = 20 hours. Together, the subway ride and the train ride take Andrew 10 + 20 = 30 hours. With an additional bike ride of 8 hours to reach the Bronx, Andrew takes 30 + 8 = 38 hours to travel from Manhattan to the Bronx.
The answer: 38
Reverse engineering the question: Traveling from Manhattan to the Bronx, Andrew rides the subway for 10 hours, takes the train and rides for twice as much time as the subway ride, and then bikes the remaining distance for 8 hours. What's the total time he takes to reach the Bronx from Manhattan?

Susie earned $10 x 3 = $30 per day. Last week, she earned a total of $30 x 7 = $210. She spent $210 x 3 / 10 = $63 on make - up. While she spent $210 x 2 / 5 = $84 on her skincare products. Thus, she spent a total of $63 + $84 = $147 from her earnings. Therefore, Susie is left with $210 - $147 = $63 from her earnings last week.
The answer: 63
Reverse engineering the question: Susie babysits every day for 3 hours a day at the rate of $10 per hour. She spent 3/10 of the money she earned from last week to buy a make-up set. She then spent 2/5 of her money on her skincare products. How much is left from her earnings last week, in dollars?

If Eliza restocked twice the original number of ornamental rings, the number was 200 / 2 = 100 rings. The total number of ornamental rings in stock is now 200 + 100 = 300 rings. When she sells 3 / 4 of the stock, the total number of rings sold is 3 / 4 * 300 = 225 rings. The remaining stock is 300 - 225 = 75 rings. When her mother buys 300 more rings, the stock is boosted to 75 + 300 = 375 rings. She then sells out 150, reducing the stock to 375 - 150 = 225 rings.
The answer: 225
Reverse engineering the question: Eliza buys 200 ornamental rings to sell in their local shop, twice the number of the remaining stock. After selling 3/4 of the total stock, her mother buys 300 more ornamental rings, and after three days, sells 150. What's the total number of ornamental rings remaining in the store?

Let x be the number of goats. Cows:4 + x. Pigs:2(4 + x) = 8 + 2x. Total:x + 4 + x + 8 + 2x = 56. 4x + 12 = 56. 4x = 44. x = 11 goats.
The answer: 11
Reverse engineering the question:
A farmer has twice as many pigs as cows, and 4 more cows than goats. If the farmer has 56 animals total, how many goats does he have?