Question

the average temperature of Monday, Tuesday Wednesday, and Thursday was 38and that of Tuesday, Wednesday, Thursday and Friday was 40. if the temperature on Monday was 30 what was the temperature on Friday​

Answer 1

Answer:

day temp of monday Tuesday wednesday and thrusday is 38/4

9.25

Day temp of wednesday and thrusday and friday is 40/4

10

So the temp of friday is 10

Answer 2

Answer:

1st 4 days total temperature = 4×38 = 152

2nd 4 days total temperature = 4×40 = 160

now, if I include Monday with Tuesday, Wednesday, Thursday, amd Friday, the total temperature will be =( 160 +30) = 190

Monday temperature = 30

[now if we just substract, 5days of total temperature from 1st 4day of total temperature, we will get Friday temperature]

(190-152) = 38°c, Friday temperature.