The number of groupings = 11C3 + 11C2 = 165 + 55 = 220
5x-y=54
x=10
50-y=54
-y=54-50
y= -4
Answer:
48 miles.
Step-by-step explanation:
A bus travels 36 miles in 45 minutes
In 60 minutes, travelling at this rate, the bus would cover:
× 36 miles = 48 miles