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Question 18 of 25.
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A pool contains 300 fish, 30% of which are whales. Twenty per cent of all the fish in the pool are white in color, and this includes 15 whales. What percent of the total
fish in the pool are neither whales nor white in color?
a. 25
b. 30%
C. 50%
d. 55
e None of these
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Answer 1

Answer:

We see that there are 300 x 0.3 = 90 trucks.

Also, that 0.2 x 300 = 60 are diesel.

We can use the formula:

Total = Trucks + Diesel - Both + Neither

300 = 90 + 60 - 15 + N

300 = 135 + N

165 = N

Since 165/300 = 0.55, we see that 55%

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Answer 2

Explanation:

Given: 300 x 0.3 = 90 trucks.

Also, in which 0.2 x 300 = 60 are diesel.

we know the total would be the addition of all

Total = Trucks + Diesel - Both + Neither

300 = 90 + 60 - 15 + N

300 = 135 + N

165 = N

165/300 = 0.55

Hence, by taking the percentage it is 55 %