A research article claims that ​78% of people have at least one pet. Suppose the claim is true for a school with 250 students. What would be the ratio of the actual number of students who have a pet to the actual total number of​ students?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

27 is what percent of 108? 27 is % of 108

If the scale factor between two circles is 2x/5y what is the ratio of their areas?