35
since m and n are the midpoints of ab and ac resistively
then ,bc=2mn=16
since m and l are the midpoints of ba and bc respectively
then, ac =2mn =10
then,nc =1/2 × 10 =5
similary, mb=6
then ,perimeter=nc+mb+mn+bc=5+6+8+16=35
Factor the numerator and denominator and cancel the common factors.
The answer is 3x.
This is the work and the answer is 4/23 or (in decimal form) 0.17391304
42%7=6. 6 times 5 is 30. 30 cakes in 5 days.