Ask Question
12 July, 07:56

The width of a rectangular room is 40% of its length. If the length is 20 feet, what is the area of the room?

+5
Answers (1)
  1. 12 July, 11:29
    0
    160 ft^2

    Step-by-step explanation:

    First you have to find the width, then you find the area. To find the width with a percentage we do Part / Total = %/100 and we cross multiply. We need to find the part so that is the unknown, we will call it 'w' for width

    w/20 = 40/100 Now we cross multiply, the x and the 100 and the 20 and 40

    w * 100 = 100w

    20 * 40 = 800

    Now we have 100w = 800 The next step is to divide both sides by 100 so we just have w

    100x/100 = w

    800/100 = 8

    w = 8

    The width is 8

    Now we find the area which is length x width

    20 x 8 = 160

    So the area is 160 ft^2
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “The width of a rectangular room is 40% of its length. If the length is 20 feet, what is the area of the room? ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers