if kevin took 1/10 of an hour to use 1/2 of package of napkins. how many hours would it take to use 2 packages?

2/5 hours

Step-by-step explanation:

We can write a proportion to solve

1/10 hour          x hours

  =

1/2 package        2 packages

Using cross products

1/10 * 2 = 1/2 x

1/5 = 1/2x

Multiply each side by 2

1/5 * 2 = 1/2x *2

2/5  =x

2/5 hours

the correct answer is the last option

convert the answer to millimeters there are 25.4 millimeters in an inch and 12 inches in a foot so just divide the 5280 feet into a fraction of the numbers till you get to the simplest form you need so (5280 x 12=63360 inches) (63360 x 25.4=1609344 millimeters) (5280/12=440 feet) its as simple as that just break it down to it's simplest form.