WE HAVE THOSE TWO MATHEMATIC TYPES, HOW CAN WHY COMBINE THEM IN ORDER TO FIND THE A,B,C?
A:B:C=3:2:3 (1)
15A+6B+9C=20 (2)
THANK YOU IN ADVANCE!
so C=A
and
\(\frac{B}{A}=\frac{2}{3}\\ B=\frac{2}{3}*A\)
Now
15A+6*(2/3)A+9A=20
15A+4A+9A=20
28A=20
\(A=\frac{20}{28}=\frac{5}{7}\\ B=\frac{2}{3}*\frac{5}{7}=\frac{10}{21}\\ C=\frac{5}{7}\)
