As far as I can tell is just a Permutation.
Answer:
2x-3/3
Step-by-step explanation:
Hope this helps
2 x Area of the triangular ends.
= 2 x ( 1/2 bh)
= 2 x (1/2 x 6.8 x 5.1)
2 x Area of rectangular sides
= 2 x lw
2 x (6.1 x 13)
Area of bottom
= lw
= 6.8 x 13
Now add all three results together for the surface area.
After Jen read 4/5 (12/15) of a book there was 1/5 left.
The next day she reads 2/3 of 1/5 which equals 2/15 of the book
So by 2 days 14/15 of the book is read and there is 1/15 left.