The mean of the temperatures of a town in a week is 36°C. If the mean temperature of the first 4 days of the week is 35°C and that of Saturday and Sunday is 37°C, find the temperature on Friday.



Answer :

Certainly! Let's break down the problem step-by-step.

1. We are given the following information:
- The mean temperature for the entire week (7 days) is 36°C.
- The mean temperature for the first 4 days is 35°C.
- The mean temperature for the weekend (Saturday and Sunday) is 37°C.

2. First, we need to calculate the total combined temperature for the entire week.

Since the mean temperature for 7 days is 36°C:
[tex]\[ \text{Total temperature for the week} = 36 \times 7 = 252^\circ C \][/tex]

3. Next, we find the total combined temperature for the first 4 days.

Since the mean temperature for the first 4 days is 35°C:
[tex]\[ \text{Total temperature for the first 4 days} = 35 \times 4 = 140^\circ C \][/tex]

4. Then, we calculate the total combined temperature for the weekend (Saturday and Sunday).

Since the mean temperature for the weekend is 37°C:
[tex]\[ \text{Total temperature for the weekend} = 37 \times 2 = 74^\circ C \][/tex]

5. Now, we can find the temperature for Friday.

The total weekly temperature should be the sum of the temperatures for the first 4 days, Friday, and the weekend. Thus, we can set up the following equation:
[tex]\[ \text{Total temperature for the week} = \text{Total temperature for the first 4 days} + \text{Temperature on Friday} + \text{Total temperature for the weekend} \][/tex]

6. Plugging in the values we have:
[tex]\[ 252 = 140 + \text{Temperature on Friday} + 74 \][/tex]

7. Solve for the temperature on Friday:
[tex]\[ \text{Temperature on Friday} = 252 - 140 - 74 = 38^\circ C \][/tex]

So, the temperature on Friday is 38°C.