# Math

How do I solve this?

There are 171 seventh graders eating lunch. This number represents 45% of all of the seventh grades. How many 7th graders are there in the school?

Would I take 171 x 45% and add them together or take 171 X .55 or??

1. 👍 0
2. 👎 0
3. 👁 35
asked by Tyler
1. Do you know algebra?

let the number of students be x

.45x = 171
x = 171/.45
x = 380

or do it by the "3 step process"

45% represents 171
so 1% = 171/45 = 3.8
100% = 100*3.8 = 380

1. 👍 0
2. 👎 0
posted by Reiny
2. How do I solve this word problem
to do with fractions ro

What is one seventh of 6.3?

1. 👍 0
2. 👎 0

## Similar Questions

1. ### English

For English class, we're doing a vocab. review for seventh graders, as part of our teaching project. Should seventh graders know what inevitable means? What age should people know that word by? Thank you.

asked by Allison on March 15, 2009
2. ### Math

Need help on this question: There are 32 sixth graders and 44 seventh graders in the video gaming club. Which ration is greatest? a. the ration of 6th graders to 7th graders b. the ration of 6th graders to club memebers c. the

asked by Brandi on March 29, 2013
3. ### math

A soccer team consists of girls from sixth, seventh, and eighth grades. If 4/10 of the girls on the team are eighth graders and 5/10 are seventh graders, what fraction of the girls ae either seventh or eighth graders?

asked by Gia on August 25, 2011
4. ### math

A soccer team consists of girls from sixth, seventh, and eighth grades. If 4/10 of the girls on the team are eighth graders and 5/10 are seventh graders, what fraction of the girls ae either seventh or eighth graders?

asked by Gia on August 25, 2011
5. ### math

my P.E. teacher asked the 100 seventh graders in my school if they could swim. Half of the boys and two thirds of the girls said yes. Seventeen boys said no. How many seventh graders know how to swim?

asked by Karl on October 7, 2009
6. ### Math

One half the members of the junior high math team are ninth graders. One fourth of the remaining members are eighth graders. One fifth of the rest are seventh graders. There are twelve 6th graders on the team. How many members on

asked by Tim on July 13, 2015
7. ### math

83 3rd graders 115 4th graders 150th graders all the 5th graders will be on one side and all the 4th graders will be on the other side the 3rd graders will be split up so that the two sides will have equal number of student how

asked by dexter on September 30, 2014
8. ### math

mrs. karson's music class includes both 6th and seventh graders. the ratio's of 6th graders to students ine the class is 4:7. there are 9 seventh graders in the music class how many students sre in the class?

asked by tas on October 10, 2012
9. ### math

The lunchroom workersare giving away free cookies today. They gave the first graders 4 cookies. They gave the second graders 8 cookies. They gave the third graders 12 cookies. They gave the fourth graders 16 cookies. If the

asked by Michele on January 11, 2009
10. ### math

If there are 264 students in a school and there are 84 eighth graders and There are 22 fewer seventh graders than sixth graders. Then which grade has the most students and how many students are there.

asked by KC on December 5, 2011

More Similar Questions