Anna has 7 more books than Paul. Paul has 19 more books than James. James has 11 books. How many books does Anna have?

anna has 37

Step-by-step explanation:

Let a = books anna has

a has 7 more than paul

a = p+7

paul has 19 more than james

p = j+19

james has 11

p = 11+19

paul has 30

a = p+7

a = 30+7

anna has 37

b.an increase in a causes b to decrease

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)