The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table