Multiple choice

Fifteen years hence a man will be four times as old as he was fifteen years ago. What is his present age? एक आदमी अब से 15 वर्ष बाद, अपनी 15 वर्ष पहले की आयु का चार गुना होगा तो उसकी वर्तमान आयु क्या है?

  1. 25 years/वर्ष

  2. 20 years /वर्ष

  3. 30 years /वर्ष

  4. 45 years /वर्ष
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let present age be x. Then x + 15 = 4(x - 15). Solving: x + 15 = 4x - 60, so 3x = 75 and x = 25 years. Check: in 15 years he'll be 40, and 15 years ago he was 10. Indeed, 40 = 4×10.

Keep practicing — related questions