B. 70
1⅔ gross is equal to (5/3) * 12 = 20
To make it equal to 15, we need to add 15 - 20 = -5
Absolute value of -5 is 5, therefore we need to add 5 more, which is 70.
What must be added to 1⅔ gross to make 15cm scores
A. 50
B. 70
C. 50
D. 80
1 answer