Multiple choice

A bag contains a total of 500 black, red and white balls in the ratio of 2:3:5. What will be the new ratio, if 20 balls of each colour are added in the bag?

  1. 4:6:10

  2. 12:17:25

  3. 72:25:30

  4. 12:17:27
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Initial balls: 500 total, ratio 2:3:5. Parts = 2+3+5 = 10. Each part = 50. Black=100, Red=150, White=250. Add 20 of each: Black=120, Red=170, White=270. New ratio = 120:170:270 = 12:17:27.

AI explanation

For the original 500 balls in the ratio 2 : 3 : 5, the 10 total parts mean each part equals 50 balls, giving initial counts of 100 black, 150 red, and 250 white balls. Adding 20 of each color results in 120 black, 170 red, and 270 white balls. The new ratio is 120 : 170 : 270, which simplifies to 12 : 17 : 27.

Keep practicing — related questions