Question

The average mass of a kernel of popcorn is 0.125 g if one pound equals 16 oz, and 1 oz equals 28.3 g then how many kernels of popcorn are there in 0.500 pounds of popcorn?

Answer 1

Answer:

There are 1811  kernels of popcorn are there in 0.500 pounds of popcorn.

Explanation:

The average mass of a kernel of popcorn is 0.125 g

1 pound = 16 oz =  452.8 g

1 oz = 28.3 g

16 oz =  452.8 g

1 pound =  452.8 g

0.125 g = $\frac{1}{452.8} pounds\times 0.125 =0.000276060 pounds$

Total mass of the pop corns = 0.500 pounds

Number of popcorn kernel:

$\frac{0.500 pounds}{0.000276060 pounds}=1811.2\approx 1811$

There are 1811  kernels of popcorn are there in 0.500 pounds of popcorn.

Answer 2

I won't give the answer, but here's the process: You have the weight of the object (0.500 lbs), and you want to convert that into the number of kernels. You are given the fact that 1 pound = 16 oz, and 1 oz=28.3 grams. So it should be apparent that you need to convert pounds to ounces first and then convert ounces to grams. Now that you the grams, you can easily figure out how many kernels there are because .125 grams equals the weight of one kernel.


Source: IGN