In a bag, the ratio of black balls to white balls is 7 : 4. If there are 44 white balls, find the total number of balls in the bag.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 121.
Given that, ratio of black balls to white balls = 7 : 4
Number of white balls = 44
Let the total number of black and white balls be 7x and 4x respectively.
Total number of balls = 7x + 4x = 11x
According to the given question,
4x = 44
⇒ x = 11
Now, total number of balls = 11x
⇒ 11 × 11 = 121
Hence the total number of balls in the bag is 121.