A travel agent offers a vacation plan which costs z dollars for the first day and z/6 dollars for each additional day. How much does a vacation of y days cost, in dollars, where y>1??
$$A.\ \ \frac{yz}{6}$$
$$B.\ \ \frac{yz}{3}$$
$$C.\ \ \frac{(yz+6z)}{6}$$
$$D.\ \ \frac{(yz+5z)}{6}$$
$$E.\ \ \frac{(y^2z+5yz+z^2)}{3}$$
The OA is D.
I don't have clear this PS question. Please, can any expert explain it for me? Thanks.
$$A.\ \ \frac{yz}{6}$$
$$B.\ \ \frac{yz}{3}$$
$$C.\ \ \frac{(yz+6z)}{6}$$
$$D.\ \ \frac{(yz+5z)}{6}$$
$$E.\ \ \frac{(y^2z+5yz+z^2)}{3}$$
The OA is D.
I don't have clear this PS question. Please, can any expert explain it for me? Thanks.
