Mitsushama Systems buys new development machines for ¥150,000 each and these are used within the company for 6 years. If they have a resale value of ¥40,000, what is their value at the end of each year with straight-line depreciation? How does this compare with the values from reducing-balance depreciation at a rate of 25%? What depreciation rate would reduce the machine's value to ¥10,000 after 4 years?