Question

There were 35 blue pens and 15 red pens in a box. Adam put 12 more blue pens in the box. The percentage increase in the number of pens is:

Answer 1

Answer:

47%

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

Number of blue pens of first: 35

Adam puts: 12 more blue pens

12+35+15 = 62

There are 62 pens altogether.

62-15 = 47

There were 47 pens at first.

62-47 = 15.

So,

47 = 100%

1 = 100/47

 = 2.12%

15 = 2.12*15

    = 31.8%

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