Rizwan has a box in which he kept red and blue marbles. The red marbles and blue marbles were in the ratio 5 : 4. After he lost 5 red marbles the ratio became 10 : 9. How many marbles does he have now?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 76
Red : Blue = 5 : 4
A/Q
5x - 5/4x = 10/9
45x - 45 = 40x
x = 45/5 = 9
Remaining marbles = 5 × 9 + 4 × 9 - 5 = 45 + 36 - 5 = 76