Armando read 20 pages of his 200-page book in 4 hours. at this rate, how long will it take him to read the entire book?

a. 20 hours
b. 40 hours
c. 4 hours
d. 5 hours

Given the vector .

Now taking the vertices of parallelogram asA .

As we know to find the edges of parallelogram ABCD,we proceed as follows

= Position vector of B - Position vector of A

= Position vector of C - Position vector of B

                            =

= Position vector of D - Position vector of C

                           =

= Position vector of A - Position vector of D

                       =

So, are edges of parallelogram.