Betty needs $4\dfrac13$ balls of yarn for every $7$ scarves she knits.
**Complete the table to figure out how many balls of yarn Betty would need to knit $14$ scarves and $21$ scarves.**
| | ||
- | :-: | :-: | :-:
Balls of yarn | $4 \dfrac13$ |[[☃ math-keypad 1]] | [[☃ math-keypad 2]]
Number of scarves | $7$ | $14$| $21$