**Answer:**

52.5 km

**Step-by-step explanation:**

the info about the trip from Malim to Petani is irrelevant and only there to confuse us.

but from the return trip info we get all we need.

for x km it took then 30 minutes at an average speed of 105 km/h.

to get km out of km/h, we need to multiply the speed number by the hours traveled. that removed the "h" and leaves us with km.

n km/h × a h = a×n km

so, now, in our example we have 105 km/h, and 30 minutes = 1/2 h.

so, we have

x = 105 km/h × 1/2 h = 105/2 km = 52.5 km

Is it multiple choice? An example would be 2, 8, 32...

**Answer:**

a=

8n3−12n2+6n−1

2n3+3

**Step-by-step explanation:**

X is euqal to 22/9.

I hoped this help you!~