Solution:
The total monthly income of P and Q is
⇒P+Q= Rs. 5,050×2= Rs. 10,100⋯(1)
The total monthly income of Q and R is
⇒Q+R= Rs. 6,250×2= Rs. 12,500... (ii)
The total monthly income of P and R is
⇒P+R= Rs. 5,200×2= Rs. 10,400⋯ (iii)
Adding equation (i), (ii) and (iii) we get,
⇒2(P+Q+R)=10,100+12,500+10,400=33,000
⇒P+Q+R=33,000∕2= Rs. 16,500
The monthly income of P=(P+Q+R)−(Q+R)
⇒16,500−12,500= Rs. 4,000
∴ The monthly income of P is Rs. 4,000 .
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