Solve the problem.
-As Sunee improves her algebra skills, she takes 0.9 times as long to complete each homework assignment as she took to complete the preceeding assignment. If it took her 75 minutes to complete her first
Assignment, find how long it took her to complete the fifth assignment. Find the total time she took to
Complete her first five homework assignments. (Round to the nearest minute.)
A)49 min; 307 min
B)44 min; 307 min
C)49 min; 258 min
D)44 min; 258 min

Question

Quizplus · Accepted Answer

The time taken to complete each assignment is 0.9 times the time taken for the previous assignment. So, the time taken for the second assignment is 0.9 * 75 = 67.5 minutes, the time taken for the third assignment is 0.9 * 67.5 = 60.75 minutes, the time taken for the fourth assignment is 0.9 * 60.75 = 54.675 minutes, and the time taken for the fifth assignment is 0.9 * 54.675 = 49.2075 minutes. Rounding this to the nearest minute, we get 49 minutes. The total time taken to complete the first five assignments is 75 + 67.5 + 60.75 + 54.675 + 49.2075 = 307.1375 minutes. Rounding this to the nearest minute, we get 307 minutes.

Solve the Problem. -As Sunee Improves Her Algebra Skills, She Takes 0.9 Times