For one year from two cows were milked 8100 L. The nextyear the first cow increa

For one year from two cows were milked 8100 L. The nextyear the first cow increased her yield of milk with 15% and thesecond one with 10%. So they milked 9100 L. from the two cows. Howmany litres are milked from every cow during the first and thesecond year?