Step-by-step explanation:
Distance = Speed x Time
Given Distance = 40km/h or kph
Time = 5 hours 15 minutes
=

Distance Travelled = 40 kph x 5.25 hours
= 210km
Answer:
Step-by-step explanation:
Answer:
x + 3y
Step-by-step explanation:
- x + x + x + y x y x y
-x + 2x + 3y
x + 3y
9x+21 is less than or equal to 2x