Question

jordan is knitting a sweater. he keeps track of how many balls of green and yellow yarn he uses in the table below. if he uses 15 balls of yellow yarn, how many balls of green yarn will he need? choose one option a 6 b 13 c 8 d 10

Explanation:

Step1: Find the ratio of green to yellow yarn

From the table, when green is 2, yellow is 3. So the ratio of green to yellow is $\frac{2}{3}$.

Step2: Calculate green yarn for 15 yellow yarn

Let the number of green yarn be $x$. Using the ratio $\frac{x}{15}=\frac{2}{3}$. Cross - multiply: $3x = 2\times15$. Then $3x=30$, and $x = \frac{30}{3}=10$.

Answer:

D. 10