We have a question: It is recommended that men should consume no more than 150 calories of added sugar per day. Mark took a soft drink in the afternoon that contained 2500 calories, 5% of which was from added sugar. Then he bought some bars of candy which had 25 calories of added sugar each. If he eventually exceeded the recommended intake of added sugar by 100%, how many bars of candy did he take?
And an answer: 7
So how you got the answer?
He consumed 2500 calories, 5% of which is added sugar to give 2500 * (5 / 100) = 125 calories of added sugar. He exceeded the recommended intake of 150 calories by 100% for a total consumption of 150 + (150(100 / 100)) = $300. This means he took in 300 - 125 = 175 calories from candy alone. Each candy had 25 calories so 175 calories which means he consumed 175 / 25 = 7 bars?.

We have a question: Xavier runs three times as many miles as Katie, who runs 4 times as many miles as Cole. If Xavier runs 84 miles, how many miles does Cole run?
And an answer: 7
So how you got the answer?
Katie runs one - third of Xavier's distance, which is 84 / 3 miles = 28 miles. Cole runs a quarter of Katie's distance, which translates to 28 / 4 = 7 miles.

We have a question: The New York City Council bought 200 streetlights to modernize its squares. But they don't have enough squares to use all the streetlights bought. Knowing that there are 15 squares in New York and that each park will have 12 new streetlights bought by the city council, how many unused streetlights will remain?
And an answer: 20
So how you got the answer?
So the total number of streetlights that will be used is 15 squares * 12 streetlights / square = 180 streetlights. There will be 200 streetlights - 180 streetlights = 20 streetlights unused.