Mathematics, 04.09.2021 19:50, airelle146

In a car park the ratio of white cars to black cars is 2:7. The ratio of white cars to red cars is 3:11.
Altogether there are 343 white, black and red cars.

How many black cars are in the car park?

Could anyone please teach me the method?

Answers: 2

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In a car park the ratio of white cars to black cars is 2:7. The ratio of white cars to red cars is...