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

Question

Adriana Novak

11 March, 05:02

+2

Answers (1)

Know the Answer?

Rylee Hobbs · Answer 1

Answer:A $375

Step-by-step 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

11. A certain watch costs $100, and a certainpearl necklace costs $300. If the cost of thewatch increases by 5% and the cost of thepearl necklace decreases by 10%, what will bethe sum of their new costs?A. $375B. $385C. $395D. $405