Harper knows he is 50 yards from school. the map on his phone shows that the school is 3/4 inch from his current location. of harpers current location is 3 inches from home on the same map, how far is harper from home?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)