The ratio of P and Q in an alloy is 3 : 7. If the alloy is made of only P and Q, how much amount of Q will be there in 1800 kg of that alloy?

1150 kg 1320 kg 1210 kg 1260 kg

1260 kg

Here, P : Q 3 : 7 ⇒ (3 + 7)units = 1800 Kg ⇒ 10 units = 1800 ⇒ 1 unit = 180, ⇒ Amount of Q in alloy = 7 x 180 = 1260 Kg.