Question

Wonder Works Pte Ltd $(\text{'}$WW$\text{'})$ produces ceramic hair curlers to sell to department stores. The production equipment costs WW $$70,000$ four years ago. Currently, the net book value stands at $$45,000.$ An improved version of the equipment is available now for $$139,350.$ The new machine has a useful life of five years. The disposal value at that point in time is estimated to be $$20,000.$

The new machine is expected to increase unit sales by $6,000$ curlers per annum. The estimated unit selling price is $$35$ for the first year.

The following table provides the unit

costs for the first year:

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