Correct Answer - Option 4 : None of these

**Given****∶**

He drove 10 miles in 2 hours

Also, he arrived half an hour late

**Formula Used****∶**

Speed = Distance / Time

**Calculation****∶**

According to question,

Time taken to reach stadium = 2 + 1 / 2 = (4 + 1) / 2 = 5 / 2 hr.

Required Speed = Distance/Time

⇒ 10 / (5 / 2)

⇒ (10 × 2) / 5

⇒ 4 miles

**∴ He should drive with a speed of 4 miles/hour to reach exactly on time.**