al, bill and carl went shopping. when they compared the totals that each had spent they found that al and bill together spent a total of 1200, bill and carl together spent a total of 1800, and al and carl together spent a total of 1000. how much did each person spend?
al=a ,b=bill,c=carl spent together: ab=1200 bc=1800 ac=1000 therefore , al spent : 200 bill spent: 1000 Carl spent:800 al+bill=1200 bill+Carl =1800 and al +Carl= 1000
