The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is :

Question

নিচের অপশন গুলা দেখুন

• 35
• 45
• 65
• 55

Answer 1

সঠিক উত্তর হচ্ছে: 45

ব্যাখ্যা: Let us take 30 students average marks = x
Then,
30x + (3 × 85) = 60 × 65
x = 130 - 85
x = 45