A box contains 50 blue, red and green balls, if 20%are blue and 50% are green, what are the number of red balls?​

Respuesta :

Answer:

15 - red

Step-by-step explanation:

20/100 × 50 = 10 blue

50/100 × 50 = 25 green

25 + 10 = 35

50 - 35 = 15

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