SSC CGL Model Paper 4

(2) Total weight of P, Q and R =47×3=141kg
⇒ P + Q + R =141 ...(i)
Total weight of P and Q =32.5×2=65 kg
⇒ P + Q =65 ... (ii)
Total weight of Q and R =48.5×2=97 kg
⇒ Q + R = 97 ...(iii)
From Eqs. (i) and (iii),
P + 97 = 141
⇒ P = 141 - 97
∴ P = 44
Putting the value of P in Eq. (ii),
⇒ 44 + Q = 65
⇒ Q = 65 - 44
∴ Q =21 kg