tytenaedwards2340 tytenaedwards2340

13-04-2019
Mathematics

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A bag contains a total of 100 black and white marbles without looking a marble is chosen record and placed back in the back the student records eight black marbles and two white marbles predict the number of black marbles in the bag

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medinairving123 medinairving123

13-04-2019

there are 80 black marbles and 20 white marbles

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bandameedipravalika bandameedipravalika

20-05-2022

Answer:

There are 80 black marbles in the bag.

Step-by-step explanation:

Ratio

A ratio is the tool to compare two quantities and that can be the comparisons of parts to wholes ,wholes to parts and parts to parts are all .

Here the ratio of black and white is 8 : 2

therefore the according to situation [tex]8x + 2x = 100\\[/tex]

[tex]10x = 100[/tex]

[tex]x = 10[/tex]

therefore the number of black marbles =[tex]8 x[/tex] = [tex]8[/tex] × [tex]10[/tex] = [tex]80[/tex]

hence the total number of black marbles = 80

To know more about the ratio click here.

https://brainly.com/question/2328454

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