What must be added to 1⅔ gross to make 15cm scores

Answer 1

To find out what must be added to 1⅔ gross to make 15cm scores, first we need to convert the gross to a more standard unit of measurement (dozens) for easier calculation.

1 gross = 12 dozens
1⅔ gross = 1 gross + ⅔ gross = 12 + 8 = 20 dozens

Now we need to find out how many dozens need to be added to 20 dozens to make 15cm scores.

15cm scores = 15 x 12 = 180 dozens

Now we can find out what must be added by subtracting 20 dozens from 180 dozens:
180 - 20 = 160 dozens

Therefore, 160 dozens must be added to 1⅔ gross to make 15cm scores.