Math, asked by anweshamallick061, 19 days ago

The average of 3 number is 25. if two of them are 14 and 21.find the third number ​

Answers

Answered by IndianMathTutor
0

Answer:

40

Step-by-step explanation:

As per the formula,

Sum of three numbers = 3 * 25 = 75

Hence

75 = 14 + 21 + Third Number

75 - 14 - 21 = Third Number

40 = Third number

Thank you, Student... Good day to you.

Answered by shahegulafroz
0

Given-

The average of 3 number is 25.

Two numbers are 14 and 21

To find-

The third number

Solution-

Let,

The third number is x

Average is a ration of sum of all given value by the number of values given.

The average of 3 number is 25 write it as

\frac{14+21+x}{3} = 25

\frac{35+x}{3}=25

35 +x = 25\times 3\\35 +x = 75\\x= 75 - 35\\x= 40

The third number is 40.

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