Fifteen percent of the students in seventh grade at western middle school have perfect attendance. there are 220 students in seventh grade. how many have perfect attendance? 11 22 33 44

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Agarden consists of an apple tree, a pear tree, cauliflowers, and heads of cabbage. there are 40 vegetables in the garden. 24 of them are cauliflowers. what is the ratio of the number of cauliflowers to the number of heads of cabbage?