A jeweler buys a ring from a jewelry maker for $115. He marks up the price 135%. What is the markup before the selling price?
A $1,552.50

B
$155.25

C
$15.53

D
$270.25

Ahmed plans to add a rectangular sunroom to his house. the sunroom will have a length of 14 feet and a width of 10 feet, and the construction will cost $40 per square foot. how much more would the sunroom cost if it’s width were increased to 12 feet?