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May 2, 2016

# Homework Help: Read my reponse

Posted by Chris - Ms Sue Please on Tuesday, December 18, 2012 at 8:31pm.

There are 1,800 students at a high school. Of the students who have smoked at least one cigarette in the last month, five-eighteenths are twelfth graders. Thirty-five percent of the remaining students are eleventh graders, and the rest are in the ninth and tenth grades. If there are 169 students in the ninth and tenth grades who have smoked at least one cigarette in the last month, how many students in all have smoked at least one cigarette in the last month?

260 students
360 students
50 delegates
35 delegates

These choices do not make sense because 5/18 of 1800 is 500 by itself ???

•Math - Need help please - Ms. Sue, Tuesday, December 18, 2012 at 7:41pm
5/18 of the total smokers are in 12th grade.

You need to find how many smokers there are.

•Math - Need help please - Chris - Ms Sue, Tuesday, December 18, 2012 at 8:29pm
That's not true.

See what it says

Of the students who have smoked at least one cigarette in the last month, five-eighteenths are twelfth graders.

That equals 500 more than all the choices given