Question 194414
10T+15S=1,000
T+S=80 OR T=80-S
10(80-S)+15S=1,000
800-10S+15S=1,000
5S=1,000-800
5S=200
S=200/5
S=40 SWEATS SOLD.
80-40=40 T'S SOLD.
PROOF
10*40+15*4-=1,000
400+600=1,000
1,000=1,000