InterviewSolution
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InterviewSolution
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2. The age of two friends A and B differ by 3 years. A's father D is twice as old as A and B as twice asold as his sister C. The age of C and D differ by 30 years. Find the age of A and B. (NCERT) |
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Answer» A age = ab age = bani's father, dharma's age = dcathy's age = cA/qa-b =3____(1)d=2a__(2)b= 2cc= b/2____(3)d-c = 30____(4)putting value of (2) and (3) in 42a - (b/2) = 30⇒4a -b = 60____(5)now subtracting (1) and (5), we get,a = 19 yearsb = 19-3 = 16 yearsanji's age = 19 yearsbiji's age = 16 years |
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