The average temperature for Wednesday, Thursday and Friday was 40°C. The average for Thursday, Friday, and Saturday was 41° C. If the temperature on Saturday was 42° C, what was the temperature on Wednesday?

  • A. 39° C
  • B. 44° C
  • C. 38° C
  • D. 41° C

Certainly! Let’s simplify the problem step by step:

Average temperature for Wednesday, Thursday, and Friday (W, T, F):

W+T+F3=40

Average temperature for Thursday, Friday, and Saturday (T, F, S):

T+F+S3=41

Temperature on Saturday (S):

S=42

Now, let’s substitute the value of

S into the second equation:

T+F+423=41

Multiply both sides by 3 to get rid of the fraction:

T+F+42=123

Subtract 42 from both sides:

T+F=81

Now, substitute this into the first equation:

W+813=40

Multiply both sides by 3:

W+81=120

Subtract 81 from both sides:

W=39

So, the temperature on Wednesday (W) is

39C.

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