About 50.4 billion pieces of unopened junk mail ends up in landfills each year. This is about 48% of all junk mail that is sent annually. How many pieces of junk mail are sent annually?

Question

anonymous · Answer

So 48% of some total amount of junk mail is $50.4 billion.

anonymous · Answer

.48 x N = 50.4

Divide .48 on both sides to get the total amount.

anonymous · Answer

There would be 105 billion pieces of junk mail sent annually.

directrix · Answer

Let J = all Junk mail sent annually
48% J = 50.4 billion
.48 J = 50.4
J = 50.4 / .48
J =  105 billion

anonymous · Answer

The perimeter of a basketball court is 90 meters and the length is 6 meters longer than twice the width . What are the length and width