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Jyoti

· started a discussion

· 1 Months ago

Can't we do it like this (Question: 186060.0 )

P Q = 5050
- Q -R = -6250 = -1200
P R = 5200 = 4000

Question:
The average monthly income of P and Q is Rs.5,050. The average monthly income of Q and R is Rs.6,250 and the average monthly income of P and R is Rs.5,200. The monthly income of P is –
Options:
A) Rs.3,500 
B) Rs.4,000
C) Rs.4,050
D) Rs.5,000
Solution:
Ans: (b)  

Let P, Q and R represent their respective monthly incomes. Then, we have:


P + Q = (5050 x 2) = 10100 .... (i)


Q + R = (6250 x 2) = 12500 .... (ii)


P + R = (5200 x 2) = 10400 .... (iii)


Adding (i), (ii) and (iii), we get:  2(P + Q + R) = 33000  or   P + Q + R = 16500 .... (iv)


Subtracting (ii) from (iv), we get P = 4000.


 P's monthly income = Rs. 4000.

NIKHIL KUMAR

· commented

· 1 Months ago

Yet to be approved!

Ranjeet vishwakarma

· commented

· 1 Months ago

Nice

amit yadav

· commented

· 1 Months ago

Yet to be approved!
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