\(3a=4b=5c=\frac{a}{\frac{1}{3}}=\frac{b}{\frac{1}{4}}=\frac{c}{\frac{1}{5}}\)
Áp dụng TC DTSBN ta có :
\(\frac{a}{\frac{1}{3}}=\frac{b}{\frac{1}{4}}=\frac{c}{\frac{1}{5}}=\frac{a+b+c}{\frac{1}{3}+\frac{1}{4}+\frac{1}{5}}=\frac{94}{\frac{47}{60}}=120\)
=> a = 40 ; b = 30 ; c = 24