To find: The width of the door
Answer to Problem 16PPS
The width of the door is 3 ft.
Explanation of Solution
Given:
The height of the door is 1 foot more than twice its width.
Door is 7 feet high
Calculation:
Let w be the width of the door.
Twice of the width means 2w.
Given that the height h of the door is 1 foot more than twice its width.
One foot more than twice of the width means 1 + 2w.
Thus, h =1+2w.
Here, door is 7 feet high, thatis, h =7 ft.
Putting all together, the required equation is,
Find the width w.
Solve the equation (1) for w.
Hence, the width of the door is 3ft.
Conclusion:
Hence, the width of the door is 3ft.
Chapter 4 Solutions
Pre-Algebra Student Edition
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