Math Is Fun Forum

Joseph

Guest

6th Grade math

Five students each bring 16 yards of ribbon to school for a project.  How can the ribbon be divided so that Arnie gets exactly twice as much as Susan?

justlookingforthemoment

Moderator

Registered: 2005-05-26

Posts: 2,161

Re: 6th Grade math

Arnie gets 50 yards, and Susan 25.

16 yards * 5 students = 75 yards

75 yards = arnie + susan, and
arnie = 2 x susan

so,
75 = 3 x susan
susan = 25 yards

75 - 25 = arnie = 50 yards.

edit - oh, good point. i can't multiply./

Ricky

Moderator

Registered: 2005-12-04

Posts: 3,791

Re: 6th Grade math

Do the other kids not get any ribbon?

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Joseph

Guest

Re: 6th Grade math

16*5=80

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: 6th Grade math

2x + x = 100%
3x = 100%
x = 33.3%
Arnie + Susan
66.7% + 33.3% = 100%
2/3 + 1/3 = 1

5 ribbons.
2 for anie and 1 for susan.
That leaves 2 more.

How to divide 2 ribbons.

2/3 of 2 is 1.3333
1/3 of 2 is .66667

Convert 16 yards to feet since 3 is involved.

16 yards is 48 feet.

16 + 16 + 16 feet = 48 feet.

Arnie gets 16 + 16 + 16 + 16 feet + the 2 whole ribbons.
Susan gets 16 + 16 feet + 1 whole ribbon.

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