Wrong answer for problem


#1

HOW 6 WORKS: Start both the hour glasses at zero. After 4 minutes, flip the 4 minute hour glass. Then after 3 minutes, flip both. When 4 minute hour glass gets empty, start the time for 7 minute hour glass. It will now give 6 minutes.

“4” "7"
4-0 7-0
0-4 3-4
4-0 3-4
1-3 0-7
1-3 7-0
0-3 6-0
NOW WE CAN MEASURE 6 FROM SECOND HOUR GLASS


#2

The question clearly states total measuring time should not exceed the time arrived by the process. Your process (4+3+4…) exceeds 6 minutes.