Initially Mandeep is at place X and Sandeep is at place Y and these two places are separated by a distance of 825kms. Mandeep stared his journey at 35 khph for 3 hours earlier than Sandeep to meet each other. If the speed of Sandeep is 45 kmph and they met at place Z between X and Y; the distance between Y and Z (in kms) is

A

505

B

460

C

435

D

405