Question 97079
5P+7S=1915 MULTIPLY BY -4
4P+3S=1155 MULTIPLY BY 5 & THEN ADD
-20P-28S=-7660
20P+15S=5775
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-13S=-1885
S=-1885/-13
S=145 CALORIES FOR EACH SUPER DRINK.
5P+7*145=1915
5P+1015=1915
5P=1915-1015
5P=900
P=900/5
P=180 CALORIES FOR EACH PROTEEN BARS.