Complex sentence: Consider the task to find the present value "PV" of $100 that will be received in five years, or equivalently, to find which amount of money today will grow to $100 in five years when subject to a constant discount rate.
Split into simpler sentences: Consider the task to find the present value "PV" of $100 that will be received in five years. Or equivalently, to find which amount of money today will grow to $100 in five years when subject to a constant discount rate.