during 2015 , continued management actions , primarily the sale or transfer to held-for-sale of approximately $ 1.5 billion of delinquent residential first mortgages , including $ 0.9 billion in the fourth quarter largely associated with the transfer of citifinancial loans to held-for-sale referenced above , were the primary driver of the overall improvement in delinquencies within citi holdings 2019 residential first mortgage portfolio . credit performance from quarter to quarter could continue to be impacted by the amount of delinquent loan sales or transfers to held-for-sale , as well as overall trends in hpi and interest rates . north america residential first mortgages 2014state delinquency trends the following tables set forth the six u.s . states and/or regions with the highest concentration of citi 2019s residential first mortgages. .

in billions of dollars enr ( 2 ) (1): ca: 19.2
ny/nj/ct ( 4 ): 12.7
va/md: 2.2
il ( 4 ): 2.2
fl ( 4 ): 2.2
tx: 1.9
other: 11
total ( 5 ): 51.5
in billions of dollars enrdistribution (1): ca: -37
ny/nj/ct ( 4 ): 25
va/md: 4
il ( 4 ): 4
fl ( 4 ): 4
tx: 4
other: 21
total ( 5 ): -100
in billions of dollars 90+dpd% ( 90+dpd % ) (1): ca: -0.2
ny/nj/ct ( 4 ): 0.8
va/md: 1.2
il ( 4 ): 1
fl ( 4 ): 1.1
tx: 1
other: 1.3
total ( 5 ): -0.7
in billions of dollars %ltv >100% ( >100 % ) ( 3 ): ca: -1
ny/nj/ct ( 4 ): 1
va/md: 2
il ( 4 ): 3
fl ( 4 ): 4
tx: 2014
other: 2
total ( 5 ): -1
in billions of dollars refreshedfico: ca: 754
ny/nj/ct ( 4 ): 751
va/md: 719
il ( 4 ): 735
fl ( 4 ): 723
tx: 711
other: 710
total ( 5 ): 738
in billions of dollars enr ( 2 ) (2): ca: 18.9
ny/nj/ct ( 4 ): 12.2
va/md: 3
il ( 4 ): 2.5
fl ( 4 ): 2.8
tx: 2.5
other: 18.2
total ( 5 ): 60.1
in billions of dollars enrdistribution (2): ca: -31
ny/nj/ct ( 4 ): 20
va/md: 5
il ( 4 ): 4
fl ( 4 ): 5
tx: 4
other: 30
total ( 5 ): -100
in billions of dollars 90+dpd% ( 90+dpd % ) (2): ca: -0.6
ny/nj/ct ( 4 ): 1.9
va/md: 3
il ( 4 ): 2.5
fl ( 4 ): 3
tx: 2.7
other: 3.3
total ( 5 ): -2.1
%ltv >100% ( >100 % ) ( 3 ): ca: -2
ny/nj/ct ( 4 ): 2
va/md: 8
il ( 4 ): 9
fl ( 4 ): 14
tx: 2014
other: 7
total ( 5 ): -4
refreshedfico: ca: 745
ny/nj/ct ( 4 ): 740
va/md: 695
il ( 4 ): 713
fl ( 4 ): 700
tx: 680
other: 677
total ( 5 ): 715

total ( 5 ) $ 51.5 100% ( 100 % ) 0.7% ( 0.7 % ) 1% ( 1 % ) 738 $ 60.1 100% ( 100 % ) 2.1% ( 2.1 % ) 4% ( 4 % ) 715 note : totals may not sum due to rounding . ( 1 ) certain of the states are included as part of a region based on citi 2019s view of similar hpi within the region . ( 2 ) ending net receivables . excludes loans in canada and puerto rico , loans guaranteed by u.s . government agencies , loans recorded at fair value and loans subject to long term standby commitments ( ltscs ) . excludes balances for which fico or ltv data are unavailable . ( 3 ) ltv ratios ( loan balance divided by appraised value ) are calculated at origination and updated by applying market price data . ( 4 ) new york , new jersey , connecticut , florida and illinois are judicial states . ( 5 ) improvement in state trends during 2015 was primarily due to the sale or transfer to held-for-sale of residential first mortgages , including the transfer of citifinancial residential first mortgages to held-for-sale in the fourth quarter of 2015 . foreclosures a substantial majority of citi 2019s foreclosure inventory consists of residential first mortgages . at december 31 , 2015 , citi 2019s foreclosure inventory included approximately $ 0.1 billion , or 0.2% ( 0.2 % ) , of the total residential first mortgage portfolio , compared to $ 0.6 billion , or 0.9% ( 0.9 % ) , at december 31 , 2014 , based on the dollar amount of ending net receivables of loans in foreclosure inventory , excluding loans that are guaranteed by u.s . government agencies and loans subject to ltscs . north america consumer mortgage quarterly credit trends 2014net credit losses and delinquencies 2014home equity citi 2019s home equity loan portfolio consists of both fixed-rate home equity loans and loans extended under home equity lines of credit . fixed-rate home equity loans are fully amortizing . home equity lines of credit allow for amounts to be drawn for a period of time with the payment of interest only and then , at the end of the draw period , the then-outstanding amount is converted to an amortizing loan ( the interest-only payment feature during the revolving period is standard for this product across the industry ) . after conversion , the home equity loans typically have a 20-year amortization period . as of december 31 , 2015 , citi 2019s home equity loan portfolio of $ 22.8 billion consisted of $ 6.3 billion of fixed-rate home equity loans and $ 16.5 billion of loans extended under home equity lines of credit ( revolving helocs ) . .

Questions:
as of december 31, 2015, what was the amount of the loans extended under home equity lines of credit?
and what was the total citi 2019s home equity loan portfolio?
what percentage, then, of this total does that amount represent?
and what percentage did the fixed-rate home equity loans represent?

Answers:
16.5
22.8
72.4%
28%