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Querist : Anonymous (Querist)
17 April 2017 how we get 72 as H??/ CAN someone please explain me.. H / 90 *(90-H)*50=10H H IS 72 HOW??/


20 April 2017 Step 1 H/90*(90-H)*50=10H
Step 2 H*(90-H)*50=900H
Step 3 H*(4500-50H)=900H
Step 4 4500H-50H^2=900H
Step 5 4500H-900H-50H^2=0
Step 6 3600H-50H^2=0
Step 7 Divide Step 6 by 50H
Step 8 72-H=0
Step 9 H=72



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