If $\frac{P}{3}=\frac{Q}{5}=\frac{R}{2}$, then what is the value of (P + 2Q + 3R) : (P + Q + R) ?
Answer & explanation
Correct answer: option 1
$\frac{P}{3}=\frac{Q}{5}=\frac{R}{2}$ =k(say)
⇒ P = 3k, Q = 5k, R = 2k
P + 2Q + 3R = 3k + 10k + 6k = 19k
And P + Q + R = 3k + 5k + 2k = 10k
Thus, the required ratio = 19 : 10