Question : In a class, there are 54 students.
Option 1: 81
Option 2: 84
Option 3: 87
Option 4: 90
Correct Answer: 90
Solution :
A class of 54 students.
Average score in mathematics of boys = 50% more than that of girls
Average =
Total number of students = 54
Number of boys = 54 ×
Number of girls = 54 – 18 = 36
Let the average score of girls =
So, the average score of boys
According to the question,
⇒
⇒
⇒
Average score of boys = 30 × 3 = 90
Hence, the correct answer is 90.
