For each given situation, do not solve the problem. write only the key elements and the unknown. write the equation that will solve the problem a. when 8 is added to two times a number, the result is 50. find the number. b. in an algebra test, the highest grade was 50 points higher than the lowest grade. the sum of the two grades was 180. find the lowest grade. c. the length of a rectangular map is 15 inches more than its width. if the area of the rectangle is 225 square inches, find the width of the rectangle. d. a dairy farm has two cows. last month, cow. a produced 250 gallons less than twice the amount of milk from cow b. together, the two cows produced 1200 gallons of milk e. glenn received a paycheck of p18,500. this amount reflects his monthly camnings after deducting 30% from his earnings for taxes. how much was he paid before taxes were deducted? f. two cars start at the same time from two towns 792 kilometers apart and meet in 9 hours. one car can travel 8 km faster than the other car. how far did each car travel before they meet? g. several persons rented a boat for p3,000 sharing the cost equally. if there had been one more person in the group, each person paid p 100 less. how many people were there in the group originally? h. aidan is four times as old as aidri. twenty years from now, aidan will be twice as old as aidri then. find aidan's present age. i. two numbers are in the ratio 5 to 8. when 2 is added to each, the ratio of the resulting numbers is 2 is to 3. find the numbers. j. mario can finish a job 2 hours longer than karlo. after mario had been working for 1 hour, karlo joined him and they completed the remaining portion of the job after 3 hours. how long would it take mario to do the job if he worked alone?