Question

Two placesâp and q are 400 miles apart. A car starts from p at a speed of 50 mph towards q. After 75 minutes, another car starts from q to p at a speed of 40 mph. At what time will the cars meet?

Answer 1

Answer:

They will meet after 3 hr and 45 mins more.

Step-by-step explanation:

The distance between the points p and q is 400 miles.

Car A (say) starts to move from p towards q at a speed of 50 mph.

Hence, after 75 mins i.e. 1.25 hours, it will cover a distance =50×1.25 =62.5 miles.

Since, after 75 mins another car B (say) starts to move from q towards p at a speed of 40 mph.

Hence, the remaining (400-62.5) =337.5 miles will be covered by both Car A and Car B with a combined speed of (50+40)= 90 mph.

Therefore, they will take $\frac{337.5}{90}$=3.75 hr. or 3 hr and 45 mins more to meet each other.

(Answer)