The two longest total solar eclippses occurred in 1991 and 1992. The first one lasted 6 5/6 minutes. the eclipse of 1992 lasted 5 1/3 minutes. how much longer was 1991's eclipse?
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6 5/6 - 5 1/3 =   subtract how much longer!  convert to improper fractions

(36 + 5)/6 - 2/2 * (15+1)/3 multiply by 1/2 to get a common denominator.

41-32/6 =  9/6 = 3/2 = 1 1/2 minutes longer 

by Level 10 User (55.7k points)

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