Q1 · medium · AI-verified
The average of 6 numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. What is the average of the remaining two numbers?
- 4.4
- 4.6
- 4.8
- 4.2
Q2 · medium · AI-verified
The average weight of a class of 24 students is 35 kg. If the weight of the teacher is included, the average rises by 400 g. What is the weight of the teacher?
- 48 kg
- 46 kg
- 44 kg
- 45 kg
Q3 · medium · AI-verified
The average weight of 20 students in a class is 56 kg. When a teacher's weight is included, the average increases by 2 kg. What is the weight of the teacher?
- 98 kg
- 104 kg
- 82 kg
- 116 kg
Q4 · hard · AI-verified
The average of marks obtained by 120 candidates in an examination was 35. If the average marks of passed candidates was 39 and that of failed candidates was 15, what was the number of candidates who passed the examination?
- 110
- 100
- 90
- 95
Q5 · medium · AI-verified
If the average of a, b, and c is 15, and the average of b, c, and d is 18, what is the value of d − a?
- 6
- 12
- 9
- 3