Final answer:
To find the number of yards of string Cassie will need for 47 balloons, multiply the length per balloon by the total number of balloons and then convert the length from feet to yards.
Step-by-step explanation:
To determine how many yards of string Cassie will need for 47 balloons, we first need to calculate the total length of all the balloon strings. Since each balloon string is 6 feet long, we multiply 6 by 47 to find the total length of string in feet: 6 feet/balloon x 47 balloons = 282 feet total.
Next, we need to convert the length from feet to yards. Since there are 3 feet in a yard, we divide the total length in feet by 3 to get the length in yards: 282 feet ÷ 3 = 94 yards.
Therefore, Cassie will need 94 yards of string.