Two cars P and Q start at the same time from A and B which are 120 km

1.	Two cars P and Q start at the same time from A and B which are 120 km apart. If the two cars travel in opposite directions, they meet after one hour and if they travel in same direction (from A toward
Answer» 70 km/hr Let their speed be x km/hr and y km/he respectively. Then, 120/(x+ y) = 1 => x + y = 120 --- (i) Now, when they move in same direction: (Distance TRAVELED by P in 6 hrs) - (Distance traveled by Q in 6 hrs) = 120 km 6x - 6y = 120 => x - y = 20 --- (ii) Sloving (i) and (ii), we get x = 70, y = 50 P's speed = 70 km/hr.

Two cars P and Q start at the same time from A and B which are 120 km apart. If the two cars travel in opposite directions, they meet after one hour and if they travel in same direction (from A toward

Answer»

70 km/hr

Let their speed be x km/hr and y km/he respectively.

Then, 120/(x+ y) = 1 => x + y = 120 --- (i)

Now, when they move in same direction:

(Distance TRAVELED by P in 6 hrs) - (Distance traveled by Q in 6 hrs) = 120 km

6x - 6y = 120 => x - y = 20 --- (ii)

Sloving (i) and (ii), we get x = 70, y = 50

P's speed = 70 km/hr.