Question

WE HAVE TWO HOURGLASS ONE IS OF MINUTES AND OTHER ONE IS 5 MINUTES , NOW MEASURE 13 MINUTES​

Answer 1

Answer:

How can you use these two hourglasses to measure exactly 9 minutes? Solution: Flip both timers over. When the 4-min timer is empty, flip it over (the 7-min timer has 3 minutes left in the top).

Step-by-step explanation:

Hope that might help you dear