Question

the average temperature of wednesday thursday friday was 34 c. the average temperature of thursday friday saturday was 35c. the temperature on saturday was 32c.find temperature of wednrsday

Answer 1

very easy

take Wednesday as X and Thursday Friday as y

according to given condition

$\frac{x + y}{3} = 34$

multiply by 3 you get

$x + y = 102$

mark it as one

now according to second condition

$\frac{y + 32}{3} = 35$

multiply by 3

$y + 32 = 105$

simplify
you will get it as y=73
substitute y in one
you will get
x+73=102
solve and get the x

Answer 2

Average Temperature of

Wednesday, Thursday,Friday=34°C

Average Temperature of

Thursday, Friday, Saturday=35°C

Temperature on Saturday=32°C

Let Temperature on Thursday=X1

Let Temperature on Friday=X2

AS we know AVERAGE

$\mathbf{\frac{Sum\: of \:total \:Term}{Total \:terms}}$

Then Average of Thursday,Friday, Saturday.

$\mathbf{\frac{X1+X2+32}{3}=35}$

$\mathbf{X1+X2+32=35\times3}$

$\mathbf{X1+X2+32=105}$

$\mathbf{X1+X2=105-32}$

$\mathbf{X1+X2=73}$

MEANS Sum of Thrusday and Friday Temperature=73°C

Now

Average Temperature of Wednesday, Thrusday,Friday=34°C

Then Average

Let Temperature on Wednesday=W °C

Temperature of Thrusday=X1 °C

Temperature of Friday=X2°C

$\mathbf{\frac{W+X1+X2}{3}=34}$

We know X1+X2=73

Now

$\mathbf{\frac{73+W}{3}=34}$

$\mathbf{73+W=34\times3}$

$\mathbf{73+W=102}$

$\mathbf{W=102-73}$

$\mathbf{W=29\: degree C}$

$\boxed{\mathbf{Temperature \:on \:Wednesday=29 \:degree C}}$