69.3. In a contract of lease with guaranteed residual value, the implied credit charges must be computed in the manner prescribed in section 52, and the implied credit rate computed in accordance with the Act is the rate computed in the manner prescribed in section 53 or 54, as the case may be.
For purposes of those computations, sections 51 to 54 apply, with the expressions “implied credit charges”, “implied credit rate” and “net obligation” substituted for the expressions “credit charges”, “credit rate” and “capital”, respectively, wherever they appear.