Question
A's age is twice B's age. Twelve years ago, A was four times as old as B was then. What is the present age of A? / A की आयु B की आयु की दोगुनी है। बारह वर्ष पहले A उस समय B से चार गुना आयु का था। A की वर्तमान आयु क्या है?
Option 3 : 36 years / 36 वर्ष
Detailed Solution
सही उत्तर 36 years / 36 वर्ष है।
Let B = x; then A = 2x. Twelve years ago: 2x − 12 = 4(x − 12), giving x = 18, so A = 36 years. / माना B = x; तब A = 2x। बारह वर्ष पहले: 2x − 12 = 4(x − 12), जिससे x = 18, अतः A = 36 वर्ष।
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prepsnap.in • ReasoningQuestion:
A's age is twice B's age. Twelve years ago, A was four times as old as B was then. What is the present age of A? / A की आयु B की आयु की दोगुनी है। बारह वर्ष पहले A उस समय B से चार गुना आयु का था। A की वर्तमान आयु क्या है?
Correct Answer: 36 years / 36 वर्ष
Let B = x; then A = 2x. Twelve years ago: 2x − 12 = 4(x − 12), giving x = 18, so A = 36 years. / माना B = x; तब A = 2x। बारह वर्ष पहले: 2x − 12 = 4(x − 12), जिससे x = 18, अतः A = 36 वर्ष।