Can someone please assist me with this problem, I asked another tutor on Course Hero and they were unable to correctly assist me with this question.

You sell coconuts on the beach. Total sales depend on how many people buy coconuts p as well as how many coconuts each person buys b. For each coconut you sell, you make $5, so your total sales are f(p, b) = 5pb. Moreover, let p = g(t,r) b = h(t,r) describe how p and b in turn are determined by the temperature t and chance of rain r.

a) Let s represent your total sales. Describe in words what s/t represents, in the context of temperature, chance of rain, number of buyers, coconuts per buyer, and coconut sales.

b) Do the same for s/r.

c) Apply the chain rule to find s/r.

d) What do you expect the sign of s/r to be? Explain why, discussing the contribution of each derivative or partial derivative.

Thank You