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?
Answer & explanation
Correct answer: option 4
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
$27 : 24 = 9 : 8$