Question

11. A certain watch costs $100, and a certain

pearl necklace costs $300. If the cost of the
watch increases by 5% and the cost of the
pearl necklace decreases by 10%, what will be
the sum of their new costs?
A. $375
B. $385
C. $395
D. $405

Answer 1

Answer:A $375

Explanation:

5% of 100 is 5 so the watch is $105

10% of 300 is 30 so the pearl necklace is $270 270+105= 375