Question 1158747
6D+2C=5.94; so 12D+4C=11.88
4D+5C=7.04; so -12D-15C=-21.12 multiplying by -3
-11C=-9.24, adding the two
C=$0.84
therefore 6D+1.68=5.94, so 6D=$4.26 and D=$0.71
check in second

4(0.71)+5(0.84)=$7.04
coffee is $0.84 and donut is $0.71