Question

The average temperature for 1st, 2nd and 3rd
June was 40°C. The average for 2nd, 3rd and
4th was 41°C, that for 4th 42°C. What was the
temperature on 1st June?​

Answer 1

so the answer of this question is 39°C

Answer 2

The temperature on 1st June is 39°C.

Given:-

Average temperature for 1st, 2nd, and 3rd June = 40°C

Average temperature for 2nd, 3rd, and 4th June = 41°C

The temperature on the 4th day = 42°C

To Find:-

The temperature on 1st June.

Solution:-

We can easily calculate the temperature on 1st June by using these simple steps.

As

Average temperature for 1st, 2nd, and 3rd June (avg1) = 40°C

Average temperature for 2nd, 3rd, and 4th June (avg2) = 41°C

The temperature on the 4th day = 42°C

Let, the temperature on 1st day be x

The temperature on the 2nd day be y

and the temperature on the 3rd day be z

Now, the Average temperature for 1st, 2nd, and 3rd June = 40

i.e.

$\frac{x + y +z }{3} = 40$

$x + y + z = 40 \times 3$

$x + y + z = 120$

Also, the Average temperature for 2nd, 3rd, and 4th June (avg2) = 41°C

i.e.

$\frac{y + z + 42}{3} = 41$

$y + z + 42 = 41 \times 3$

$y + z + 42 =123$

$y + z = 123 - 42$

$y + z = 81$

Now, putting this value in the above equation

$x + y + z = 120$

$x + 81 = 120$

$x = 120 - 81$

$x = 39$

Hence, The temperature on 1st June is 39°C.

#SPJ2