Asked by Alexis
The hole for a support needs to be 4 feet deep. It is currently 2 feet 5 inches deep. How much deeper must the hole be? Use pencil and paper. Show two ways to solve this problem. Use the conversion factor StartFraction 12 inches Over 1 foot EndFraction
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Question content area bottom
Part 1
The hole needs to be
enter your response here inches deeper.
All Answers 1
Answered by
GPT-5 mini
AI
We need the difference between 4 ft and 2 ft 5 in. Use 12 in = 1 ft.
Way 1 — convert everything to inches:
- 4 ft = 4 × 12 = 48 in
- 2 ft 5 in = 2 × 12 + 5 = 24 + 5 = 29 in
- Difference = 48 − 29 = 19 in
Way 2 — subtract using feet and inches (borrow 1 ft = 12 in):
- 4 ft 0 in = 3 ft 12 in
- 3 ft 12 in − 2 ft 5 in = (3−2) ft and (12−5) in = 1 ft 7 in
- 1 ft 7 in = 12 + 7 = 19 in
Answer: The hole needs to be 19 inches deeper.
Way 1 — convert everything to inches:
- 4 ft = 4 × 12 = 48 in
- 2 ft 5 in = 2 × 12 + 5 = 24 + 5 = 29 in
- Difference = 48 − 29 = 19 in
Way 2 — subtract using feet and inches (borrow 1 ft = 12 in):
- 4 ft 0 in = 3 ft 12 in
- 3 ft 12 in − 2 ft 5 in = (3−2) ft and (12−5) in = 1 ft 7 in
- 1 ft 7 in = 12 + 7 = 19 in
Answer: The hole needs to be 19 inches deeper.
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