Explanation:
A. 0=500-20P
20P=500-0
20P=500(÷ both by 20)
P=25
B. 500-20(25)
500-500
Qd=0
C. 500-20(20)
500-400
Qd=100
D. 140=500-20P
20P=500-140
20P=360(÷ both by 20)
P=18
E. 200=500-20P
20P=500-200
20P=300(÷ both by 20)
P=15
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Answers & Comments
Explanation:
A. 0=500-20P
20P=500-0
20P=500(÷ both by 20)
P=25
B. 500-20(25)
500-500
Qd=0
C. 500-20(20)
500-400
Qd=100
D. 140=500-20P
20P=500-140
20P=360(÷ both by 20)
P=18
E. 200=500-20P
20P=500-200
20P=300(÷ both by 20)
P=15