A combat engineer platoon is constructing a defensive barrier. They use 15 sandbags to rei… — Armed Services Vocational Aptitude Battery (ASVAB)

A combat engineer platoon is constructing a defensive barrier. They use $15$ sandbags to reinforce a specific section. If each filled sandbag weighs exactly $42$ pounds and $12$ ounces, what is the total weight of the sandbags used for this section, in pounds?

Cevap: 641.25 pounds

Cevap

641.25

The correct calculation requires first establishing the exact weight of a single sandbag in pounds. Because there are

16

ounces in

1

pound,

12

ounces converts to

0.75

pounds (

12 \div 16

). Adding this to the base

42

pounds yields

42.75

pounds per sandbag. Multiplying this decimal weight by the

15

sandbags results in exactly

641.25

pounds.

Adım Adım Çözüm

Convert the ounce portion of the sandbag weight into pounds.

12 \text{ oz} \div 16 \text{ oz/lb} = 0.75 \text{ lbs}

To perform accurate arithmetic operations in a single unit, the mixed US Customary unit must be standardized into pounds.

Calculate the total weight of one sandbag in pounds.

42 \text{ lbs} + 0.75 \text{ lbs} = 42.75 \text{ lbs}

Combines the converted ounce value with the existing pound value to find the exact decimal weight of a single unit.

Multiply the single sandbag weight by the total number of sandbags.

42.75 \text{ lbs} \times 15 = 641.25 \text{ lbs}

Finds the aggregate weight for all

15

sandbags used in the section.

Anahtar Kavram

Converting mixed US Customary weight units (pounds and ounces) to a single decimal unit and calculating aggregate weight.

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