Question : The average of 4 numbers is 45. The average of the first two numbers is thrice the average of the other two numbers. What is the sum of the first two numbers?
Option 1: 122
Option 2: 105
Option 3: 125
Option 4: 135
New: SSC MTS Tier 1 Answer key 2024 out
Don't Miss: Month-wise Current Affairs | Upcoming Government Exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 135
Solution : The average of 4 numbers is 45. Total = 4 × 45 = 180 Let the average of the first two numbers be $x$ and the average of the other two numbers $3x$. According to the question, $2x+(3x)×2=180$ $⇒8x=180$ $\therefore x = 22.5$ So, the sum of the first two numbers = $6×22.5=135$ Hence, the correct answer is 135.
Application | Cutoff | Selection Process | Preparation Tips | Eligibility | Exam Pattern | Admit Card
Question : The product of two positive numbers is 240. If the ratio of the two numbers is 3 : 5, then what is the sum of the two numbers?
Option 1: 46
Option 2: 45
Option 3: 32
Option 4: 42
Question : The average of the three numbers is 135. The largest number is 195 and the difference between the other two is 20. The smallest number is:
Option 1: 65
Option 2: 95
Option 3: 105
Option 4: 115
Question : The average of three numbers is 135. The largest number is 195 and the difference between the other two is 20. The smallest number is:
Question : The average of nine numbers is 20. If two of these numbers are removed, then the average becomes 18. What is the sum of the two numbers that are removed?
Option 1: 56
Option 2: 58
Option 3: 54
Option 4: 52
Question : The average of 15 numbers is 45. One more number is added, and the new average becomes 50. What is that new number?
Option 1: 125
Option 2: 118
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile