convert
1. 15 Ib = ______ oz
2. 3 T = _______ Ib
3. 320 oz = _______ Ib
4. 23 Ib =_______ oz
5. 6 T = ______ Ib
6. 144 oz = ________ Ib
7. 15 T = ________ Ib
8. 352 oz = _____ Ib
9. 18 Ib =_______ oz

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