Answer:
Answer: D (3 or 4)
Step-by-step explanation:
either 34 or 214
C.
\frac{15a+20b}{6} 15a+20b/6
\mathrm{Apply\:the\:fraction\:rule}:\quad \:a\cdot \frac{b}{c}=\frac{a\cdot \:b}{c}