Zilla spent 7% of her monthly earnings on rent, half of it on her other monthly expenses, and put the rest in her savings. If she spent $133 on her rent, how much does she deposit into her savings account in a month?
Let's think: Since $133 is equal to 7% of her earnings, then 1% is equal to $133 / 7 = $19. The total monthly earning of Zilla is represented by 100%, so $19 x 100 = $1900 is her monthly earnings. So, $1900 / 2 = $950 is spent on her other monthly expenses. The total amount spent on the rent and other monthly expenses is $133 + $950 = $1083. Hence, she saves $1900 - $1083 = $817 per month.. The answer is: 817.

The difference in ages between Richard and Hurley is 20. If Hurley is 14 years old, what are their combined ages 40 years from now?
Let's think: If Hurley is 14 years old, and the difference in ages between Richard and Hurley is 20, Richard is 20 + 14 = 34. Forty years from now, Hurley will be 14 + 40 = 54 years old. Richard will be 40 + 34 = 74 years forty years from now. Their combined ages forty years from now will be 74 + 54 = 128 years.. The answer is: 128.

Leah bought 3 boxes of birdseed. When she went to put them away, she discovered that she already had 5 boxes in the pantry. Her parrot eats 100 grams of seeds each week and her cockatiel eats 50 grams of seeds in a week. If each box of birdseed contains 225 grams, for how many weeks can she feed her birds without going back to the store?
Let's think: In a week, her birds eat a total of 100 grams + 50 grams = 150 grams of seed each week. Leah has a total of 3 + 5 = 8 boxes of birdseed. The boxes of birdseed contain a total of 8 * 225 grams = 1800 grams. This is enough birdseed to feed her pets for 1800 / 150 = 12 weeks.. The answer is: 12.

There are four lamps in Valerie's room. All of them are burnt out, so she needs to buy new light bulbs. She needs 3 small light bulbs and 1 large light bulb. She has $60 to spend. If small light bulbs cost $8 and large light bulbs cost $12, how much money will Valerie have left over?
Let's think:
She will spend 3 * $8 = $24 on small light bulbs. In total she will spend $24 + $12 = $36 on the 4 light bulbs. She will have $60 - $36 = $24 left over.. The answer is: 24.