Respuesta :

Answer:

Step-by-step explanation:

1) 20 for $1.56

The unit price is

1.56/20 = $0.078

= 7.8 cents each

2) $3.78 for 6

The unit price is

3.78/6 = 0.63

= 63 cents each

3) 2 1/2 for 1 dollars

The unit price is

1/2.5 = 0.4

= 40 cents each

4) 5 at 3.9

The unit price is

3.9/5 = 0.78

= 78 cent each

5) 1 1/2 for 1.58

The unit price is

1.58/1.5 = 1.05

= 1.05 each