Question

19. A basket has 2 types of fruits. 20 apples and 5 oranges. Find
i) the ratio of the apples to total no. of fruits
ii) The percentage of oranges in the basket​

Answer 1

Answer:

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Step-by-step explanation:

Solution :

Let A denotes Apples and O denotes Oranges and it is given that there are 20 apples and 10 oranges.

Out of 20 apples 5 and 10 oranges 3 are defective.

P(AUB)=P(A)+P(B)−P(A∩B)

n(A)=(20C2)

P(A)=20C230C2

n(B)=22C2

P(B)=22C230C2

n(A∩B)=15C2

P(A∩B)=15C230C2

P(AUB)=20C230C2+22C230C2−15C230C2

P(AUB)=0.72

Answer 2

ratio of apples to the total number of fruits = 4:5

% of oranges = 20%

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