Question

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Answer 1

140

Explanation:

7/20=x/400

Multiply 20 on the numerator and denominator to get 140/400

Answer 2

the expected number in the bass population is 140

Explanation:

to solve the proportion
`(7)/(20) = (x)/(400)`, we would cross multiply

so we would multiply 7 × 400 which is equal to 2800

then we would multiply 20 × x which gives us 20x

20x = 2800 < divide both sides by 20 to isolate x

20x/20 = x

2800/20 = 140

x = 140

the expected number in the bass population is 140