Question

nanci has a large fish tank that contains fish. The ratio of orange fish to black fish is 5:8. If nanci has a total of 20 orange fish, then how many black fish are inn the tank?

Answer 1

There are 32 black fish in the tank

Step-by-step explanation:

Nanci has a large fish tank that contains fish

• The ratio of orange fish to black fish is 5 : 8
• Nanci has a total of 20 orange fish

We need to find how many black fish in the tank

∵ The ratio between the orange fish to the black fish is 5 : 8

∵ She has 20 orange fish

By using the ratio method

→  orange  :  black

→  5            :  8

→  20          :  x

By using cross multiplication

∵ 5 × x = 20 × 8

∴ 5 x = 160

- Divide both sides by 5

∴ x = 32

∵ x represents the number of the black fish

∴ The number of the black fish is 32

There are 32 black fish in the tank

Learn more:

You can learn more about the ratio in brainly.com/question/11286417

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