Respuesta :

Answer:

We need 232 mL of Compound A

Step-by-step explanation:

We know the ratio

A    : B    : total

4       3      4+3

4      3        7

We want 406

406 /7 =58

Multiply each part by 58

A       : B        : total

4*58    3*58     7*58

232      174       406

We need 232 mL of Compound A

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