$4-24.$ The Strollers$-$to$-$Go Company makes lightweight umbrella$-$type strollers for three different groups of children. The TiniTote is designed specifically for newborns who require extra neck support. The ToddleTote is for toddlers up to $30$ pounds. Finally, the company produces a heavy$-$duty model called TubbyTote, which is designed to carry children up to $60$ pounds. The stroller company is in the process of determining its production for each of the three types of strollers for the upcoming planning period.

The marketing department has forecast the following maximum demand for each of the strollers during the planning period: TiniTote $180,$ TubbyTote $70,$ and ToddleTote $160.$ Strollers$-$to$-$Go sells TiniTotes for $$63\mathrm{.}75,$ TubbyTotes