Glenn needs 1,500 boards to build a small rocket. Each board must be 3 feet long. If boards are sold in 12 foot lengths, how many boards must Glenn buy and cut into 3 foot pieces to get the 1,500 he needs?
**NOTE : Please ignore the kerf (the width of the cut a saw makes, often about an eighth of an inch)
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Glenn needs 1,500 boards to build a small rocket. Each board must be 3 feet long. If boards are sold in 12 foot lengths, how many boards must Glenn buy and cut into 3 foot pieces to get the 1,500 he needs?
**NOTE : Please ignore the kerf (the width of the cut a saw makes, often about an eighth of an inch)
① 42
② 125
③ 375