Tangent Inc. purchased the following two intangible assets during the year. 1. A patent was purchased on March 31 for $30,000 when the remaining legal life (also its useful life) was 15 years. 2. On October 1, the company purchased a second patent for $36,000 cash. Upon acquisition, 5 years of the patent's legal life of 20 years had already expired. However, the company estimates that the useful life is expected to be only 10 years