UPSC CAPF Assistant Commandant Model Paper 5

Rick and Nancy are siblings and they start walking from their home. Nancy heads towards the south and Rick heads towards the east. Rick walks for 4km in the east and then takes a right turn and reaches a shop after walking for 5 km. Nancy walks for 5 km in the south and takes a right turn and stops at the bus stop after walking for 3 km. How far is the shop with respect to the bus stop (shortest distance)?