Answer:
the percentage of customer returns for the entire year is 9.14%
Explanation:
The computation of the percentage of the customer returns for the entire year is as follows;
= Total customer returns ÷ Total gross sales
= ($900,000× 10% + $70,000) ÷ ($900,000 + $850,000)
= ($90,000 + $70,000) ÷ ($1,750,000)
= 9.14%
Hence, the percentage of customer returns for the entire year is 9.14%