Question

How many pens would be required to make complete sets of 12,
15 and 20?​

Answer 1

Answer:

How many pens would be required to make complete sets of 12,

15 and 20?

I think the no. of pens are equal to the lack of 12,15 and 20 that is 60 .

Answer 2

Answer:- 60

All you need to do is take LCM of 12,15, & 20