Complex sentence: According to this theory, the fivefold increase in UK rents has caused the fivefold increase in house prices.This increase in house prices has put getting on the property ladder beyond the means of 90% of generation rent.
Split into simpler sentences: According to this theory, the fivefold increase in UK rents has caused the fivefold increase in house prices. And this has put getting on the property ladder beyond the means of 90% of generation rent.