Question

PLEASE!

a) If 3/5 of the 595 students are seventh graders, and 5/8 of them participated in the

competition, about how many seventh graders participated in the competition?

Describe the process you used to find your answer. (2 points)


b) If 2/5 of the 595 students are eighth graders, and 7/8 of them participated in the

competition, about how many eighth graders participated in the competition?

Describe the process you used to find your answer. (2 points).


c) About how many total students participated? Describe the process you used to

find your answer. (2 points)

Answer 1

Part A

3/5 of 595 students are 7th graders:

• 3/5*595 = 3*(595/5) = 3*119 = 357 students

5/8 of them participated in the competition:

• 5/8*357 = 5*357/8 = 1785/8 = 223 1/8 ≈ 223 students

Part B

2/5 of the 595 students are 8th graders:

• 2/5*595 = 2*(595/5) = 2*119 = 238 students

7/8 of them participated in the competition:

• 7/8*238 = 7*238/8 = 1666/8 = 208 2/8 ≈ 208 students

Part C

About how many total students participated?

Find the sum of participated students from parts A and B:

• 223 + 208 = 431 students