Answer this question:Ryan is looking for people to crowdfund his new business idea. If the average person funds $10 to a project they're interested in, how many people will Ryan have to recruit to fund a $1,000 business if he has $200 already?
First, we need to determine how much money Ryan needs to hit his goal which we find by subtracting his available cash from his target, performing 1000 - 200 = 800 dollars needed. Since the average person contributes $10 when crowdfunding, this means he needs to find 800 / 10 = 80 people to fund his business well enough for him to hit his goal.
The answer is 80.

Answer this question:Jenny leaves her house at 8:00 with some cupcakes for her daughter's birthday party at school. She jogs to the school at 15 miles per hour. Half an hour later, her wife Anna realizes that Jenny used peanut butter frosting because she forgot one of the kids in the class had a severe peanut allergy. Jenny doesn't have her cell phone, so Anna leaves the house driving at 45 miles her hour to catch Jenny and warn her. How long does Anna spend traveling in minutes?
We know that the time that Anna spends traveling is 20 minutes less than Jenny's travel time: a = j - 20. We also know that the distance both people travel is equal, so their speeds times their travel times must be equal: 15j = 45a. Substituting the first equation into the second equation, we get 15j = 45(j - 20). Multiplying through the parentheses we get 15 j = 45j - 900. Subtracting 45 j from both sides, we get - 30j =  - 900. Dividing both sides by - 30, we get j = 30. Since Anna travels 20 minutes less than Jenny, she traveled 30 minutes - 20 minutes = 10 minutes.
The answer is 10.

Answer this question:Bill thought he bought 70 chihuahuas, but some of them turned out to be rats. If the number of rats was 6 times the number of chihuahuas, how many rats did he buy?
Let r be the number of rats and c be the number of real chihuahuas. We know that r + c = 70 and r = 6c. Substituting the second equation into the first equation, we get 6c + c = 70. Combining like terms, we get 7c = 70. Dividing both sides by 7, we get c = 10. Substituting this back into r = 6c, we get r = 10 * 6 = 60.
The answer is 60.

Answer this question:At a pool party, there are 4 pizzas cut into 12 slices each. If the guests eat 39 slices, how many slices are left?
There’s a total of 4 x 12 = 48 slices. After the guests eat, there are 48 - 39 = 9 pieces.
The answer is 9.