In each case divide the price by the number of cans. The best buy is the lowest price. $12.53/7 = $1.79 $5.97/3 = $1.99 $7.95/5 = $1.59 $8.34/6 = $1.39
The fourth ad, $8.34 for 6 cans results in the lowest price per can, $1.39. The fourth ad is the best buy.
<h2><em>From the information given, Jayden already had a string that is 4 7/8 inches long.
</em></h2><h2><em /></h2><h2><em>We first write or simplify 3/8 and 4 7/8 in their decimal fraction forms.
</em></h2><h2><em /></h2><h2><em>3/8 is written as 0.375 and 4 7/8 is written as 4.875
</em></h2><h2><em /></h2><h2><em>We can now find out how many pieces he cut from the string (that was 4 7/8 inches), so:
</em></h2><h2><em /></h2><h2><em>4.875 ÷ 0.375 = 13
</em></h2><h2><em /></h2><h2><em>So he got 13 pieces of string. He wants 20 pieces, so;
</em></h2><h2><em /></h2><h2><em> 20 -13 = 7
</em></h2><h2><em /></h2><h2><em>Therefore he will need 7 more strings .
</em></h2>