Relax

Respuesta :

AL2006
'A' cows ==> 'B' gallons ==> in 'C' days

'A' cows ==> (B)/(C)  gallons per day

 1 cow  ==>  (B)/(A·C)  gallons per day


  1 cow  ==>  (B·E)/(A·C)  gallons in 'E' days

  'D' cows  ==>  (B·D·E)/(A·C)  gallons in 'E' days.