Answer:
It looks like on step c he took away 10 instead of adding 10
No, a bias question is when the speaker is predisposed to accept one particular answer as the right.
I searched it up, and this is what it showed, hope it helps
It could b a or c depend on what grade you are in
Answer:

Step-by-step explanation:
→ Work out time between New Delhi and Lucknow
12:00 - 4:00 = 8:00
→ State the speed formula
Speed = Distance ÷ Time
→ Rearrange to make distance the subject
Distance = Speed × Time
→ Substitute in the values
55 × 8 = 440 km