The average of temperatures at noontime from Monday to Friday is 50; the lowest one is 45, what is the possible maximum range of the temperatures?
1. 20
2. 25
3. 40
4. 45
5. 75
1. 20
2. 25
3. 40
4. 45
5. 75
What we need to know --> Max range
Number of days = 5
Lowest temperature = 45
To increase the Range --> we need to increase the maximum temperature
To do this we need to have 4 days of lowest temperatures = 4(45)
and one day of the highest temperature
Since average of 5 days = 50
Sum = 50(5) = 250
THus max possible temperature = 250 - 4(45) = 70
Max range = 70 - 45 = 25
IMO B
