1 liter of paint covers 10 square feet of wall. How many liters of paint does Bob need to buy if he wants to cover a wall that is 15ft by 8ft? Must show the breakdown of the problem.
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To solve this problem, we need to find the area of the wall and then determine how many liters of paint are needed to cover that area.
Step 1: Find the area of the wall
The area of a rectangle can be calculated by multiplying its length by its width. In this case, the length is 15ft and the width is 8ft. So, the area is:
Area = Length × Width
= 15ft × 8ft
= 120 square feet
Step 2: Determine the amount of paint needed
Since 1 liter of paint covers 10 square feet of wall, we can divide the area of the wall by the coverage of 1 liter to find the number of liters needed:
Number of liters = Area ÷ Coverage per liter
= 120 square feet ÷ 10 square feet per liter
= 12 liters
Therefore, Bob needs to buy 12 liters of paint to cover a wall that is 15ft by 8ft.