Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 7)
7.
The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is:
Answer: Option
Explanation:
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.
Discussion:
93 comments Page 7 of 10.
Tadele said:
4 years ago
In simple word;
5050 + 5200 = 10250.
10250 - 6250 = 4000.
The correct answer is 4000.
5050 + 5200 = 10250.
10250 - 6250 = 4000.
The correct answer is 4000.
(75)
Vamsi said:
6 years ago
P&Q+P&R=5050+5200=10250.
Q&R=10250 (PQR total value) -6250 (QR) =4000 this is answer.
Q&R=10250 (PQR total value) -6250 (QR) =4000 this is answer.
(4)
Teja said:
1 decade ago
P and Q is Rs. 5050.
P and R is Rs. 5200.
Q and R is Rs. 6250.
5050+5200-6250 = 4000.
P and R is Rs. 5200.
Q and R is Rs. 6250.
5050+5200-6250 = 4000.
Kheyali Chanak said:
8 years ago
It will be simple if apply (i)- (ii)+(iii) then we get 2P=8000, therefore P=4000.
Srinivas said:
1 decade ago
p+q= 5050
p+r=5200
total= 10250
here substract(-)q+r = 6250
p = 4000 (ans)
p+r=5200
total= 10250
here substract(-)q+r = 6250
p = 4000 (ans)
Isha said:
1 decade ago
@Praveen can you help me
Hence p+q+r-(q+r)=p+q+r-q-r=>
p=8250-6250=4000
Hence p+q+r-(q+r)=p+q+r-q-r=>
p=8250-6250=4000
RECHU said:
9 years ago
SIMPLY
P + Q + R = 16500.
P + 12500 = 16500.
P = 16500 - 12500.
P = 4000.
P + Q + R = 16500.
P + 12500 = 16500.
P = 16500 - 12500.
P = 4000.
YESU BABU PAGIDIMALLA said:
1 decade ago
Income of p=5050+5200-6250
=10250-6250
=4000
=10250-6250
=4000
Luciano said:
8 years ago
Why can't we take (5050+6250-5200)/2 = Q , Then use 5050 - Q = P?
Sudhagar said:
1 decade ago
Any one can explain briefly ? i dont understand the last step..
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