We have a question: 3 people run for president. John manages to capture 150 votes. James captures 70% of the remaining vote. If there were 1150 people voting, how many more votes did the third guy get than John?
And an answer: 150
So how you got the answer?
There were 1150 - 150 = 1000 people who didn't vote for John. That means James got 1000 * .7 = 700 votes. So the other candidate got 1000 - 700 = 300 votes. This means he got 300 - 150 = 150 more votes than John.

We have a question: Jessica has one hour to take an exam. She has answered 16 out of 80 questions. She has used 12 minutes of her time. If she keeps up this same pace, how many minutes will be left when she finishes the exam?
And an answer: 0
So how you got the answer?
She takes .75 minutes to answer a question because 12 / 16 = .75. It will take her 60 minutes to take the entire exam because 80 x .75 = 60. She has 0 minutes left when she is done because 60 - 60 = 0.

We have a question: 40% of the mosquitos in Jack's area are infected with malaria. 20% of the mosquitos are infected with Zika virus. Without a vaccine, the chances of getting infected with either virus after getting bitten by an infected mosquito are 50%. Jack is taking an experimental malaria vaccine that reduces the chances of getting infected after getting bitten by 50%. If Jack gets bitten by a random mosquito, what is the percentage chance he catches either Zika virus or malaria?
And an answer: 15
So how you got the answer?

First find Jack's chances of getting bitten by an infected mosquito: 40% + 20% = 60%. The chance of being infected by a mosquito with after being bitten: 60% * 50% = 30%. Then find the chances of getting ill after receiving the vaccine: 30% * 50% = 15%.