Question

if a pen cost 20 then how much will it cost for 20 pens?

Answer 1

Answer:

Step-by-step explanation:

☺☺☺☺

Answer 2

Answer:

400

Step-by-step explanation:

1 pen costs 20

and 20 pens cost x

1=20

20=x

you then cross multiply

20*20=x

400=x

I hope that this will help you