Andrew M. answered • 11/01/15

Tutor

New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors

The fraction of sales used for supplies is supplies/sales

Peterbaugh's = 3038.68/4920

Marino's = 3362.60/6687.90

You can reduce the above fractions if needed

Or, if your teacher doesn't like decimals in fractions you can

change the numbers to improper fractions and work it from there:

Peterbaugh's: (3038 68/100)/4920

= (3038 17/25)/4920

= (75967/25)/4920

= 75967/[(25)(4920)]

= 75967/123000

Marino's: (3362 60/100)/6687 90/100)

= (3362 3/5)/(6687 9/10)

= (16813/5)/(66879/10)

= (16813/5)(10/66879)

= 16813(2)/66879

= 33626/66879

For the percentages:

Supplies = x%( sales)

Supplies = (x/100)sales

x = (supplies/sales)(100)

Puterbaugh's: x = (3038.68/4920)(100) = 61.8%

Marino's: x = (3362.60/6687.90)(100)= 50.3%

Hope this helps. Good luck with your class.

Becky S.

do now:write equal fractions

- 12\16
- 20\12
- 15\100
- 4\50

Report

12/10/15

Deni D.

11/02/15