This is easy 4x+12 the answer
47/9+110/15=705/135+990/135=1695/135=12 15/27
Answer:
A= 7 1/2
Step-by-step explanation:
Volume of a rectangular prism= length*width*height
So Volume=2.5*4*.75= 7.5
First we need to calculate the selling price after 50% increase
selling price = original cost + increase
selling price = 100% original cost + 50% original cost
selling price = 150% original cost
selling price = 1.5 × original cost
selling price = 1.5 × 30
selling price = 45
The selling price after getting a markup is $45
Second, we need to calculate the sale price after markdown 50%
Right now, we use $45 as the original price not $30 to count the sale price
sale price = original price - markdown
sale price = 45 - 50% × 45
sale price = 45 - 0.5 × 45
sale price = 45 - 22.5
sale price = 22.5
The sale price is not $30
