Maddy's 4th grade class needs to make 1000 Valentine's Day cards to get a pizza party. There are 30 kids in the class. If everyone makes 8, how many more cards will they need to make to get a pizza party? Give the rationale and then the answer.
Let's think step by step. If 30 kids each make 8 cards, they will have made 240 cards because 30 * 8 = 240. Since 1000 - 240 = 760, they need to make 760 more cards.. The answer is: 760.

Luna's monthly food budget is equal to 60% of her house rental budget while her phone bill budget is 10% of her food budget. If the total budget of house rental and food budget is $240, how much is Luna's total monthly budget to pay all those expenses? Give the rationale and then the answer.
Let's think step by step. Let x be Luna's house rental budget. The total budget for house and food rental is represented by the equation x + (60x / 100) = 240. The equation becomes 100x + 60x = 24000 after multiplying each term by 100 to get rid of the fraction. By combining like terms, the equation becomes 160x = 24000. Thus, the value of x is 24000 / 160 = 150 which represents the house rental budget. So, Luna's food budget is $240 - $150 = $90. Her phone bill budget is $90 x 10 / 100 = $9. Therefore, Luna's monthly budget for all those expenses is $240 (house and food) + $9 (phone) = $249.. The answer is: 249.

Lyssa and Precious took an English proficiency exam. Lyssa answered 20% of the items incorrectly. Precious got 12 mistakes. How many more correct answers did Lyssa get than precious if there were 75 items in the exam? Give the rationale and then the answer.
Let's think step by step. Lyssa got 75 x 20 / 100 = 15 mistakes. Lyssa's score is 75 - 15 = 60. The score of Precious is 75 - 12 = 63. Thus, Lyssa got 63 - 60 = 3 more correct answers than Precious.. The answer is: 3.