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13-05-2020
Mathematics

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• multiple choice

Two masses are in the ratio 5:7. The second mass 42 kg. what is the first mass?
A. 35kg

B.12 kg

C.30 kg

Respuesta :

13-05-2020

Answer:

the answer is c

Step-by-step explanation:

x/42=5/7

x/42=5/7then crisscross

7x=5×42

7x=210....then divide both side by 7

x=30

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