One grocery clerk can stock a shelf in 20 min. a second clerk requires 45 min to stock the same shelf. how long would it take to stock the shelf if the two clerks worked together?

clerk A and clerk B can simultaneously stock a shelf in minutes

Explanation:

Let the first clerk be A and the second clerk be B

A can stock a shelf in 20 min

B can stock a shelf in 45 min

Consider the complete work to be W

A’s rate of stocking = per minute

B’s rate of stocking = per minute

When, A and B work simultaneously, rate of work done =

Total work done simulatenously =

=

Therefore, clerk A and clerk B can simultaneously stock a shelf in minutes

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation:

answer: it is 8

step-by-step explanation:

you know why its 8