Mathematics, 16.06.2021 08:00 hncriciacheichi

In a class of 30 pupils the ratio of left-handed pupils to right-handed pupils is 1:9. How many pupils are right-handed?

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Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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In a class of 30 pupils the ratio of left-handed pupils to right-handed pupils is 1:9. How many pup...

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