Answer and use model if possible

Question

If 2/3 of a bag of coffee weighs 4/5 of a pound, how much would the whole bag of coffee weigh?

Answer 1

Ans.. .6/5 pounds

1/3 = 2/5 =40% 2/3 X = 4/5

2/3 = 4/5 =60% OR X = 4/5 *3/3

3/3 = 6/5 =80% X = 6/5 pounds