If a : b : c = 3 : 5 : 7, what is the value of \(\frac{5a - 2b +3c}{3(a+b+c)}\) ?
Answer & explanation
Correct answer: option 2
a : b : c = 3 : 5 : 7
Put these values,
\(\frac{5a - 2b + 3c}{3 (a+b+c)}\) = \(\frac{5 × 3 - 2 ×5 + 3 × 7}{3 (3+5+7)}\) = \(\frac{26}{45}\)