Paula bought 8 pairs of socks. she paid $104.the other pairs each cost the same amount. two pairs of socks each cost $16. how much did each of the other pairs of socks cost?

Let's call the cost of one pair of the two pairs of socks that cost the same: x. We can call the cost of one pair of the other 6 pairs that cost the same: y. We can set up an algebraic equation:

2x+6y=104.

We are given that x=16, so we can substitute.

32+6y=104.

Subtracting 32 from both sides gives us

6y=72

y=12.

Each of the other pairs of socks cost $12.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.