Answer:
it would take 10 hours
Step-by-step explanation:
Answer:

Step-by-step explanation:
We are given that linear differential equation

Auxillary equation


C.F=
P.I=
P.I=
P.I=
and
where D square is replace by - a square
P.I=
Hence, the general solution
G.S=C.F+P.I

First, we subtract 20% of the amount from x, so the initial cost of the furniture should be 80% of x or 0.80x. Then, due to the sales taxs, this amount should be added with 6.25% of itself. Such that,
A = 0.80x + 0.0625(0.80x)
= 0.85x