Three friends P, Q ad R has Rs. X. Q has 20% more than the P and R has Rs. 1000 more than that of Q. If R has Rs. 7000, then find the value of X.

Correct option is E

Information Given:
Three friends P, Q, R have total Rs. X.
Q has 20% more than P.
R has Rs. 1000 more than Q.
R has Rs. 7000.

Formula Used:
Let P's amount = p
Q = p + 20% of p = 1.2p
R = Q + 1000 = 1.2p + 1000 = 7000
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Explanation:
1.2p + 1000 = 7000
1.2p = 6000
p = 6000/1.2 = 5000
Q = 1.2 × 5000 = 6000
R = 7000
X = 5000 + 6000 + 7000 = 18000

Short Trick:
R=7000 → Q=7000-1000=6000
P=6000/(1+0.2)=6000/1.2=5000
X=5000+6000+7000=18000