Q: Eight people fit in a row on an airplane, and there are 12 rows. Only 3/4 of the seats in each row are allowed to be seated. How many seats will not be occupied on that plane?
A: There a total of 8 x 12 = 96 seats on that plane. Only 8 x 3 / 4 = 6 seats are allowed to be seated in each row. So, only 6 x 12 = 72 seats are allowed to be seated on the plane. Therefore, 96 - 72 = 24 seats will not be occupied. The answer is 24.

Q: Dante needs half as many cups of flour to bake his chocolate cake as he needs eggs. If he uses 60 eggs in his recipe, calculate the total number of cups of flour and eggs that he uses altogether.
A: Dante needs half as many cups of flour to bake his chocolate cake as he needs eggs, meaning he needs 60 / 2 = 30 cups of flour for his recipe. Altogether, Dante needs 30 + 60 = 90 eggs and cups of flour for his recipe. The answer is 90.

Q: Karen's class fund contains only $10 and $20 bills, which amount to $120. The number of $10 bills is twice as many $20 bills. How many $20 bills do they have in their fund?
A:
If n is the number of $20 bills then 2n is the number of $10 bills. So the equation will be $10(2n) + $20n = $120. By combining like terms, the equation becomes 40n = 120. So, the value of n which represents the number of $20 bills is 120 / 40 = 3. The answer is 3.