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Subject :IMO    Class : Class 5

Find the value of P.
P + 1 = Q
Q + 1 = R
P + Q = 15
Q + R = 17
(a) 6
(b) 9
(c) 8
(d) 7


P 1=Qp Q=15P (p 1)=15p p=15-12p=14p=14/2 p=7

Ans 1: (Master Answer)

Class : Class 1

(D):  P + 1 = Q

⇒ P = Q - 1

Now, P + Q = 15

⇒ Q - 1 + Q = 15

⇒ 2 Q = 15 +1

⇒ 2 Q = 16 

⇒ Q = 8 

As, P + 1 = Q

⇒  P = 8 - 7 = 1

 


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