[Question]Samuel has $5, $10, and $20 bills which amount to $150 in his wallet. His $10-bills amount to $50, and he has 4 $20-bills. How many bills does Samuel have in his wallet?
[Answer]His $20 bills amount to 4 x $20 = $80. So the total amount of the $10 and $20 bills is $80 + $50 = $130. Hence, the remaining $5 bills amount to $150 - $130 = $20. This means that there are $20 / $5 = 4 $5 bills. There are also $50 / $10 = 5 $10 bills. Therefore, Samuel has 4 + 4 + 5 = 13 bills in his wallet. The answer is 13.

[Question]Kim has 12 nail polishes. Heidi has 5 more nail polishes than Kim, and Karen has 4 fewer nail polishes than Kim. How many nail polishes does Karen and Heidi have together?
[Answer]Heidi has 12 + 5 = 17 nail polishes. Karen has 12 - 4 = 8 nail polishes. Heidi and Karen have 17 + 8 = 25 nail polishes together. The answer is 25.

[Question]Gail has some bills in her wallet which amount to $100. She has four $5 bills and three $20 bills, and the rest are $10 bills. How many $10 bills are in her wallet?
[Answer]Four $5 bills amount to $5 x 4 = $20. Three $20 bills amount to $20 x 3 = $60. So Gail's $5 and $20 bills amount to $20 + $60 = $80. Thus, her $10 bills amount to $100 - $80 = $20. Therefore, she has $20 / $10 = 2 $10 bills. The answer is 2.

[Question]Kennedy's house is 600 square feet larger than 4 times Benedict's house. If Kennedy's house is 10000 square feet, how many square feet is Benedict's house?
[Answer]
Let the number of square feet in Benedict's house be x. So, we can write the equation 4 * x + 600 = 10000. Subtracting 600 from both sides we get 4 * x = 9400. Dividing both sides by 4 we get x = 2350 square feet. The answer is 2350.