Question

The temperatures on Sunday, Monday and Tuesday
were 28° C, 30° C and 32° C respectively. If the
temperature of each day from Tuesday to Friday
(both days inclusive) was 1º C less than that of the
following day, what was the difference in the
average temperatures of the first four days of the
week and that of the last three days of the week?​

Answer 1

Given :

Temperatures :

Sun = 28°C

Mon = 30°C

Tue = 32°C

Temperature of each day from Tuesday to Friday  (both days inclusive) was 1º C less than that of the  following day.

To find :

The difference in the  average temperatures of the first four days of the  week and that of the last three days of the week.

Solution :

According to the condition the temperatures will be as follows :

Tue = 32°C

Wed = 33°C

Thu = 34°C

Fri = 35°C

Sat = 36°C

Week starts from Monday.

Therefore, average temperature of the first four days

= (30 + 32 + 33 + 34) / 4

= 32.25°C

Average temperature of the last three days of the week

= (35 + 36 + 28) / 3

= 33°C

Difference between the average temperatures of the first four days of the  week and that of the last three days of the week

= 32.25 - 33

= -0.75

Answer 2

Answer: 4.25°C

Step-by-step explanation:

From Tuesday to Friday temperature was 1°C less than the next day.

So temperatures are as follows

Sun: 28°C

Mon:30°C

Tue: 32°C

Wed:33°C

Thu: 34°C

Fri:35°C

Sat:36°C

Now first 4 days according to question: (sun+mon+Tue+wed)

Therefore , average temp= 123/4 = 30.75

Average temperature of last three days = 105/3= 35

Therefore, difference in temperature = 35°C-30.75°C= 4.25°C