Multiple choice general knowledge math & puzzles

Six boys download six songs in six days. Four girls download four songs in four days. How many songs will twelve boys and twelve girls download in twelve days?

  1. 12 Songs

  2. 24 Songs

  3. 60 Songs

  4. 144 Songs

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Work rates are independent. Boys: 6 boys × 6 days = 36 boy-days produce 6 songs, so 1 song per 6 boy-days. Girls: 4 girls × 4 days = 16 girl-days produce 4 songs, so 1 song per 4 girl-days. For 12 boys and 12 girls working 12 days: Boys = 12 × 12 = 144 boy-days → 144/6 = 24 songs. Girls = 12 × 12 = 144 girl-days → 144/4 = 36 songs. Total = 24 + 36 = 60 songs.