Information Retention and Access Practice Test

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Given a total required space of 2,940 inches and units providing 216 inches each, how many units are needed (rounded up)?

Total required inches divided by inches per unit, rounding up

This question treats how many units are needed when each unit adds a fixed amount of space. You divide the total required space by the space each unit provides to see how many units are necessary, and you must round up to cover any partial unit.

Compute 2,940 divided by 216, which equals about 13.611. Since you can’t use a fraction of a unit, you round up to 14 units. Twelve or thirteen units wouldn’t reach the required space (13 units give 2,808 inches), but 14 units give 3,024 inches, which meets and exceeds the need.

Divide current inches by total units

Multiply inches per unit by required units

Subtract expansion inches from total inches

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