RRB Technician Grade 1 Model Paper 5

Concept:To find Guna's age, we need a direct or indirect relation connecting Guna to the given ages.Explanation:Statement I says Guna, Vinay and Keshav are of the same age.So, $Guna = Vinay = Keshav$.But this alone does not give any numerical value.Therefore, Statement I alone is not sufficient.Statement II says:$Vinay + Keshav + Arjun = 32$Also, $Arjun = Vinay + Keshav$.Substituting this into the sum:$(Vinay + Keshav) + (Vinay + Keshav) = 32$$2(Vinay + Keshav) = 32$$Vinay + Keshav = 16$So, $Arjun = 16$ years.But Guna is not mentioned anywhere in Statement II.Hence, Statement II alone is also not sufficient.Combining both statements:From I: $Guna = Vinay = Keshav$From II: $Vinay + Keshav = 16$Since $Vinay = Keshav$, we get:$2 \times Vinay = 16$$Vinay = 8$ yearsTherefore, $Guna = 8$ years.So both statements together are needed to answer the question.Answer:Both statements together are Needed.