



 
Hi Sandra, I can help get you started. In the first year there were 56,500 copies of the book sold and in the second year there was a 20% increase in sales so in the second year the number sold was 56,500 plus 20% of 56,500 or \[56,500 + 0.20 \times 56,500 = 1.20 \times 56,550.\] I hope this helps,  


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