C$$u $1(3$i$$m$)$: Jane is a shoe trader. She rents a shop for USD$2,000$ per month. The selling price is USD$240$ per pair of shoes, which she purchases from the manufacturer for USD$200$ per pair of shoes.

Required:

i$.$ How many pairs of shoes must be sold each month to get breakeven?

ii$.$ Jane has a target monthly profit of USD$4,000.$ How many pairs of shoes must be sold each month to get the target profit?

iii. If Jane wants to reduce the business risk $($ie$.$ getting the breakeven and target income early$),$ what should be done?