Respuesta :
Answer:
The answer is D. 153 Miles
Step-by-step explanation:
30 times 3= 90
21 times 3= 63
63 + 90= 153
Answer:
153 miles.
Step-by-step explanation:
Their combined speed is 30 + 21 = 51 mph.
Distance travelled in 3 hours = times * speed
= 3 * 51
= 153 miles.