In a school bus, there are 54 students, the ratio of boys to girls is 5 : 4. If 3 boys leave the bus at their stop, the ratio of boys to girls would be?

9 : 8

The correct answer is Option (4) → 9 : 8

Total students = 54
Ratio of boys : girls = 5 : 4

Step 1: Find number of boys and girls

Total parts = 5 + 4 = 9

• Boys = $\frac{5}{9} \times 54 = 30$
• Girls = $\frac{4}{9} \times 54 = 24$

Step 2: After 3 boys leave

• Boys left = $30 - 3 = 27$
• Girls = 24 (unchanged)

Step 3: New ratio

$27 : 24 = 9 : 8$