vikS9hethrainbowski vikS9hethrainbowski
  • 24-11-2016
  • Mathematics
contestada

If the average (arithmetic mean) of 3a and 4b is less than 50, and a is twice b, which is the largest integer value for a?

9

10

11

19

20

Respuesta :

andriansp andriansp
  • 25-11-2016
3a + b  < 100

3a +  4 (.5 a) < 100

3a + 2a < 100

5a < 100

a < 20

So  i think the answer is 19

Hope this helps

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