The average of a list of 4 numbers is 92.0. A new list of 4 numbers has the same first 3 numbers as the original list, but the fourth number in the original list is 40, and the fourth number in the new list is 48. What is the average of this new list of numbers?
Correct answer: C. 94.0
- A. 81.0
- B. 92.0
- C. 94.0
- D. 94.4
- E. 96.6
Explanation
As shown in the explanation As shown in the explanationWe are given:Average of original list = 92.0Number of values = 4So, sum of original list = 92.0×4=36892.0 \times 4 = 36892.0×4=368Original list: a, b, c, 40 New list: a, b, c, 48So the new list sum = 368 − 40 + 48 = 376Now, the average of the new list:376/4=94. ✅ Final Answer: 94.0
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Quantitative reasoning applies arithmetic and basic algebra to numerical relationships, including percentages, ratios, averages, fractions, proportions, profit and loss, rates, time, work and measurement. Questions focus on translating words into equations, choosing an efficient method and checking whether the result is numerically reasonable.
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