Three objects A, B, C are at vertices P, Q and R respectively of square PQRS of side 1km speed of these objects are 36km/hr 10m/s 0.8km/min initially they are at rest and start moving in clockwise direction simultaneously
1) By what time A reaches vertex Q distance between the objects B and C is -----kms
3/4. 4/3. 5/6. 6/5
2) Time after A will meet B is
1min20sec. 1min. 1min30sec. 1min40sec
3) Time after which all of them are at starting position is?
1min. 18min. 20min. 30min