Chemistry, asked by abhinavedtion, 9 months ago

a mixture of blue and green balls contains 25% by number blue balls. mass of each blue ball is 40g and mass of each green ball is 20g then calculate average mass of ball.​

Answers

Answered by gavaskishan
7

Answer:

25g

Explanation:

Let total no of balls -100

Green balls-75%=75

Blue balls-25%=25

By multiplying respective mass by respective no of balls we get

40*25+20*75=1000+1500

Therefore, average mass 1000+1500/100 =25g

Answered by mousmikumarisl
3

Answer:

The correct answer is 25 gm.

Explanation :

Given Data and Assumptions :

Let the total number of the balls are 100 .

Then, the mixture consists of 25% of blue balls and 75 % of green balls.

So, Number of Blue balls = 25

Number of green balls = 75

Mass of each blue ball = 40 g

Mass of each green ball = 20 g

Formula to be used :

Average = Sum of outcomes / Number of Outcomes.

Average mass of the balls = Total weight of the mixture/ Number of balls

Calculations :

Multiplying the number of balls with the respective weight of the balls to get the total mass of the mixture.

We have :

(Number of blue balls)×(Weight of blue ball) + (Number of green balls) ×(Weight of green balls) = 25 × 40 + 75 × 20 = 1000 + 1500 = 2500 .

Now, Calculating Average mass Of the balls =Total mass of balls / Total number of balls.

So, Average mass = 2500/100 = 25 gm

Hence, the average mass of the balls is 25 gm.

Concept :

  • An average is a single number calculated as the average of a set of numbers, typically calculated as the sum of the numbers divided by the total number of numbers in the set.
  • The arithmetic mean is another name for an average.

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