Answer:
- a) 2868 lbs 12 oz
- b) 7 tons 254 lbs 10 oz
Step-by-step explanation:
a) There are 16 ounces in a pound, so 10 ounces is 10/16 = 5/8 lb. The total weight of the pigs is their number multiplied by their average weight:
... weight of pigs = 30 × 95 5/8 lb = ((30·95) + (30·5/8)) lb
... = (2850 + 150/8) lb = (2850 +18 3/4) lb = 2868 lb 12 oz
b) The truck tare weight is the gross weight less the weight of the pigs.
... truck tare = truck gross - truck load
... = (8×2000 lb) + (1123 lb) + (6/16 lb) - (2868 3/4 lb)
... = 17123 3/8 lb - 2868 3/4 lb = (17123 -2868) lb +(3/8 -3/4) lb
... = 14255 lb - 3/8 lb
... = 14254 5/8 lb
... = 14000 lb + 254 lb + 5/8 lb
... truck tare weight = 7 tons 254 lbs 10 oz
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Many graphing calculators will handle calculations with fractions very nicely.
