A whole seller supplies 90 books while he was ordered to send 80 books by a retailer. If 15%trade discount was given, what was the net discount to the retailer? help me to solve this. answer should be in percentage
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15% = 15÷100 = 0.15
Let the net discount on 80 books be y
Since 15% is the discount on 90 books, it should be obvious that the discount on 80 books would be less than 15%. Therefore, this is a case of direct proportion.
90 × y = 80 * 0.15
90y = 12
y = 12 ÷ 90
y = 0.13333 or 13.33%
Therefore, the net discount when calculated over 80 books is 13.33%
Let the net discount on 80 books be y
Since 15% is the discount on 90 books, it should be obvious that the discount on 80 books would be less than 15%. Therefore, this is a case of direct proportion.
90 × y = 80 * 0.15
90y = 12
y = 12 ÷ 90
y = 0.13333 or 13.33%
Therefore, the net discount when calculated over 80 books is 13.33%
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