AKSHATH

THERE WALL CLOCK ARE THE ROOM ALL THE CLOCK RINGING TOGETHER AT 6 OCLOCK IN THE MORNING AFTER THAT1ST CLOCK RINGS ONCE FOR EVERY 20 MINUTES & 2ND CLOCK RINGS ONCE FOR EVERY 30 MINUTES & 3RD CLOCK RINGS FOR EVERY 40MINUTES WHAT WOULD BE THE TIME AT WHICH A...