25) there are 200 students in 6th periodlunch. the ratio of 7th graders to 8thgraders is 4 to 5. what percent of thestudents are 7th graders?
a) 44 4/9%
b) 55 5/9%
c) 89%
d) 80%

boxplot

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x