In a bag, black tablet covers and white tablet covers are in the ratio 5 : 9. If there are 450 white tablet covers, how many black tablet covers are there in the bag?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 250.
Calculations:
Let the number of black and white tablet covers be 5x and 9x respectively.
According to the question;
⇒ 9x = 450
⇒ x = 50
Number of black tablet covers = 5x
⇒ 5 × 50
⇒ 250