Q: Adam had a farm with animals. He had 12 cows and twice as many sheep. He decided to buy 3 pigs for every sheep he had. How many animals were on the farm after the transaction?
A: Adam had twice as many sheep as the cows, so 2 sheep / cow * 12 cows = 24 sheep. For every sheep, he bought 3 pigs, so he bought 3 pigs / sheep * 24 sheep = 72 pigs. In total on the farm, there were 72 pigs + 24 sheep + 12 cows = 108 animals. The answer is 108.

Q: Percy wants to save up for a new PlayStation, which costs $500. He gets $200 on his birthday and $150 at Christmas. To make the rest of the money, he's going to sell his old PlayStation games for $7.5 each. How many games does he need to sell to reach his goal?
A: He needs to earn $150 more dollars because 500 - 200 - 150 = 150. He needs to sell 20 games because 150 / 7.5 = 20. The answer is 20.

Q: Sam bought a heavy safe with a combination lock. There were four rows with twenty gold bars per row arranged in the safe. If each gold bar is worth $20000, calculate the total worth of the gold bars in the safe.
A:
If there were four rows of twenty gold bars arranged in the safe, the total number of bars in the safe is 4 * 20 = 80 bars. Since each gold bar is worth $20000, the 80 bars are worth 80 * $20000 = $1,600,000. The answer is 1600000.