Which of the following is an example of using
unit rate method of solving proportions?
◦ If
=
, find the cross products, 30 = 3
x, and then solve for
x. x = 10.
◦ Allison bought 3 pairs of socks for $12. To find out how much 10 pairs cost, find that $12 divided by 3 is $4 a pair, and multiply $4 by 10 for a total of $40.
◦ A square with a length of 2 inches was enlarged by a scale factor of 4 and is now 8 inches long.
◦ If 5 candy bars cost $4.50, then 10 would cost $9. (Because 5 × 2 = 10, multiply $4.50 by 2).