Posted by **Dell** on Thursday, December 1, 2011 at 11:29am.

Marnie collects red, blue and purple buttons. At the beginning of the year she has 360 buttons in a box. The ratio of red buttons to blue buttons is 4:3 and there are twice as many red buttons as purple buttons.

a.What is the ratio of blue buttons to purple buttons at the beginning of the year?

b.After Marnie adds another 200 buttons –some red and some blue – at the end of the year, the number of red buttons increased by 75% and the number of blue buttons increased by two-thirds.

i.What is the new ratio of red buttons to blue buttons?

ii.Express the number of purple buttons as a fraction of the new total number of buttons.

iii.Express the number of blue buttons as a percentage of the number of red buttons. (Round to one decimal place).

- math -
**Steve**, Thursday, December 1, 2011 at 12:38pm
so, we have red:blue:purple = 4:3:2

4+3+2=9, so there are 360/9 buttone for each proportion:

160 red

120 blue

80 purple

b:p = 3:2

after new buttons, we have

red: 160 (1.75) = 280

blue: 120(5/3) = 200

purple: 80

r:b = 280:200 = 7:5

p/all = 80/560 = 1/7

b/r = 200/280 = 5/7 = 71.4%

- math -
**Anonymous**, Monday, December 5, 2011 at 10:33am
I'm confused on where you got the 1.75 and the 5/3????

## Answer this Question

## Related Questions

- NEED HELP drawing a visual for this question - Marnie collects red, blue and ...
- math - Tammy had 900 red and blue buttons in a big box. 30% of them were blue ...
- math - justine has 162 red buttons,98 blue buttons,and 284 green buttons. she ...
- Match - justine has 162 red buttons,98 blue buttons,and 284 green buttons. she ...
- 3rd grade math - write an expression. then write a number sentence and solve. ...
- Math - A bag of buttons contains 3 red, 4 orange, 7 green and 10 blue battens. ...
- Math - A bag of buttons contains 3 red, 4 orange, 7 green and 10 blue battens. ...
- math - A bag of buttons contains 3 red, 4 orange, 7 green and 10 blue battens. ...
- math - peter has 3 different kinds of buttons in one box. there are 124 more ...
- MATH PLEASE HELP!!!!! - There are 36 buttons in a jar. There are 3 times as many...

More Related Questions