Question: The average of temperature at noon time from Monday to Friday is 50; the lowest one is 45, what is the possible maximum range of temperatures?
- 20
- 25
- 40
- 45
- 75
“The average of temperature at noon time from Monday to Friday is 50; the lowest one is 45, what is the possible maximum range of temperatures?”- is a topic of the GMAT Quantitative reasoning section of GMAT. This question has been taken from the book “GMAT Official Guide Quantitative Review”. To solve GMAT Problem Solving questions a student must have knowledge about a good amount of qualitative skills. The GMAT Quant topic in the problem-solving part requires calculative mathematical problems that should be solved with proper mathematical knowledge.
Answer:
Approach Solution (1):
There are 5 days so the sum of temperature can be 50 * 5 = 250
Lowest is 45. To find the maximum range we can say the temperature was the lowest for 4 of the 5 days
So 4 * 45 = 180
On the fifth day, it is 250 – 180 = 70
Range is therefore 70 – 45 = 25
Correct option: B
Approach Solution (2):
45 + a + b + c + d = 250
We want to maximize a single variable, which will maximize the range.
Assume, a = b = c = 45
250 – 4 * 45 = 70
Rang = 70 – 45 = 25
Correct option: B
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