Questions on Algebra: Proportions answered by real tutors!

Algebra ->  Algebra  -> Proportions -> Questions on Algebra: Proportions answered by real tutors!     (Log On)
Ad: Algebra Solved!™: algebra software that solves YOUR algebra homework problems with step-by-step help!

   


Question 140433: I have a pie chart. divided into 4 sections.
1/4 says A(20%)
1/4 says B (25%)
1/4 says C
1/4 says D
The ratio of C's to D's is 7:4
There are more B's than A's.
How many C's are there?
I am confused... Maria
: I have a pie chart. divided into 4 sections.
1/4 says A(20%)
1/4 says B (25%)
1/4 says C
1/4 says D
The ratio of C's to D's is 7:4
There are more B's than A's.
How many C's are there?
I am confused... Maria

Answer by stanbon(18998) About Me  (Show Source):
You can put this solution on YOUR website!
I have a pie chart. divided into 4 sections.
1/4 says A(20%)
1/4 says B (25%)
1/4 says C
1/4 says D
The ratio of C's to D's is 7:4
There are more B's than A's.
How many C's are there?
------------------------
C and D share 55%
The ratio of C to D is 7x/4x
7x+4x=55
11x = 55
x = 5
C = 7x = 35%
D = 4x = 20x
==================
Cheers,
Stan H.