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math help please? im lost?
i'm very confused with all this mumbo jumbo can u explain to me how to solve this math problem?
If a is not equal to 0, 2a = 5b and 3c=7a, what is the ratio of c to b?
2 Answers
- RaffaeleLv 78 years ago
the ratio of c to b is c/b
is given that
3c = 7a, so
c = 7a/3
is also given that
2a = 5b
which means
5b = 2a
b = 2a/5
so the ratio
c/b = ( 7a/3)/(2a/5) = ( 7a/3)(5/2a) = 35/6
- Anonymous8 years ago
2a = 5b
a = (5/2)b
3c = 7a
3c = 7((5/2)b
3c = (35/2)b
c = (35/6)b
Source(s): Knowledge of math
