5/3+2= 1 1/3 hours. If Party A and Party B leave at the same time, Party B will arrive 1 1/3 hours earlier than Party A. ..

If B and A drive at the same time, you can drive one more lane:11/3× (16+44) = 220km.

Therefore, the time for Party A to complete the trip is: 220÷44=5 hours.

5×16 = 80km

80 kilometers away.

2. 2/9 of the people who participated in the music group is equal to 65438+ 0/5 of the people who participated in the art group.

Then the proportion of people participating in the music group and the art group is: 1/5:2/9=9: 10.

(50+7)×9/( 10+9)=27 people.

A: There are 27 people in the music group.

3、2/5÷30÷20= 1/ 1500

20÷2/5=50 days and 50-5=45 days.

1/ 1500×30×5= 1/ 10

(1-2/5) ÷11500× (45-20) = 36 people.

36-30=6 people

A: There will be six more people.