2. The difference between the numerator and denominator of a fraction is 24, which is 3/7 after dividing it. After adding (3) identical fractional units to the original fraction, the fractional value is 0.5.
1. When processing a batch of parts, Party A will finish it in 6 hours, Party B will finish it in 9 hours, and both parties can finish processing this batch of parts in 3 hours.
( 1/6+ 1/9)*3=5/6