2x+5=25
2x=25-5
2x=20
X=20/2
X=10
2 - 101
3 - 101
4 - 79
5 - 79
6 - 101
lol hope this helps <33
This sequence (1.6, 0.8, 0.4, 0.2,... ) is geometric.
We have formula for any member of geometric sequence:

If a1=1.6 then:

The solution for all these equations is: q=0.5. We have: a1=1.6, q=0.5 and this is geometric sequence.
3 pieces for each person. 38 left in total. Hope this help!
Can you Elaborate your question?