Bejiman had 12 pounds of modle clay he used 1/5 pounds on moonday

and another 1/4 on tuseday
how many more pound left

11 11/20

Step-by-step explanation:

First determine how much was left after Monday

12 - 1/5

Borrow 1 in the form of 5/5 from the 12

11 +5/5 -1/5

11 5/5 -1/5

11 4/5

Now determine how much is left after Tuesday

11 4/5 - 1/4

Get a common denominator of 20

11 4/5 *4/4 - 1/4 *5/5

11 16/20 - 5/20

11 11/20

Not sure, calculus is hard along with 2 and 3.

Step-by-step explanation: