Question

In a bag there are 1000 balls of three different colours Red White and Black if 20% balls are red and 45% balls are white. find how many black balls are there in the bag


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Answer 1

Answer:

no. of black balls = 350

Step-by-step explanation:

20% of balls are red then no. of red balls =

$20\%of1000$

$\frac{20}{100} \times 1000$

$\frac{1}{5} \times 1000$

$200$

no.of red balls = 200

45% of balls are white then no. of white balls =

$45\%of1000$

$\frac{45}{100} \times 1000$

$45 \times 10$

$450$

Hence no. of white balls = 450

no. of total balls = 1000

no.of red balls = 200

no. of white balls = 450

Hence no. of black balls = no. of total balls - (no. of red balls + no. of white balls)

$1000 - (200 + 450)$

$1000 - 650$

$350$

Hence,

no. of black balls = 350

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Answer 2

Answer:

I don't know maths , speek in English and ask questions in English

Step-by-step explanation:

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