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September 19, 2014

September 19, 2014

Posted by **panda** on Tuesday, January 18, 2011 at 10:13pm.

a Middle school has 125 6th graders, 150 7th graders, and 100 8th graders. Which statement is NOT true?

a. the ratio of 6th graders to 7th graders is 5 to 6.

b. the ratio of 8th graders to 7th graders is 3:2.

c. the ratio of 6th graders to students in all three grades is 1:3.

d. the ratio of 8th graders to students in all 3 grades is 4 to 15.

- math -
**helper**, Tuesday, January 18, 2011 at 10:23pmb. 8th:7th = 2:3

- math -
**Ms. Sue**, Tuesday, January 18, 2011 at 10:24pmAre you supposed to solve these problems like this?

Cross multiply and solve for x.

a.

125/150 = x/6

150x = 750

x = 750/150

x = 5

- math -
**panda**, Tuesday, January 18, 2011 at 10:28pmThank you helper so much!!!!:)

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