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of Department 50
Explanation: Age of son = 6 years
Age of father = 6 × 5 = 30 years
Let after P years father will be 4 times of son.
According to question ,
⇒ 30 + P = 4 (6 + P)
⇒ 4P – P = 30 – 24
⇒ 3P = 6
⇒ P = 2 years
Hence, after 2 years father will be 4 times of son.
Explanation: Age of Mahesh = 60 years
Age of Ram = Age of Mahesh - 5 years = 60 – 5 = 55 years
Age of Raju = Age of Ram - 4 years = 55 – 4 = 51 years
Age of Babu = Age of Raju - 6 years = 51 – 6 = 45 years
Age difference between Mahesh and Babu = 60 – 45 = 15 years
Explanation: Suppose present age of Mrs. Lata = P years
Present age of son = Q years
∴ Their total age = 64 years
P + Q = 64 ....... (i)
According to question,
8 years ago , present age of Mrs. Lata - 8 years = 3 × ( present age of her son - 8 years )
⇒ P – 8 = 3 (Q – 8)
⇒ P – 8 = 3Q – 24
⇒ P – 3Q = – 16 ......(ii)
From equations (i) and (ii), we get
4Q = 80 ⇒ Q = 20
Putting the value of Q in eq.(i)
∴ Age of Mrs. Lata = 64 – 20 = 44 years
You are learning MCQ Questions of Reasoning Department : 50 | Page : 9
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