---------------------
given:
= cost of Brazilian coffee in mixture
= cost of Venezuelan coffee in mixture
= cost of mixture
---------------------
Now I can rite these equations:
(1)
(2)
Multiply both sides of (2) by and
subtract from (1)
(1)
(2)
and, since
288 kg of Brazilian coffee and 96 kg of Venezuelan coffee are needed
Answer:
Step-by-step explanation:
19.5
Answer:
C. 23
Step-by-step explanation:
18 18 22 23 26 29 36
23 is in the middle
If a bag contains white, black and red balls only and the probability of getting a white ball is 3/10 and the probability of a black ball is 2/5 then the probability of getting red balls is 3/10.
Given that a bag contains white, black and red balls only and the probability of getting a white ball is 3/10 and the probability of a black ball is 2/5.
We are required to find the probability of getting red balls.
Probability=Number of items/Total items
Probability of getting red balls=1-(Probability of getting white balls +Probability of getting black balls)
=1-(3/10+2/5)
=1-7/10
=3/10
Hence if a bag contains white, black and red balls only and the probability of getting a white ball is 3/10 and the probability of a black ball is 2/5 then the probability of getting red balls is 3/10.
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