A Carpenter Hammers Nails Each Day at Work

question 78

Multiple Choice

A carpenter hammers nails each day at work.During the first hour she can hammer 120 nails,the second hour 100 nails,the third hour 90 nails,the fourth hour 60 nails,and the fifth hour 10 nails.The average product of five hours work is _____ nails.

• A)80
• B)380
• C)320
• D)76

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Definitions:

Depth Perception

The visual ability to perceive the world in three dimensions (3D) and the distance of an object.

Visual Cliff

An experimental apparatus used to measure infants' perception of depth and their ability to assess danger.

Bridge

A structure built to span physical obstacles without closing the way underneath such as a body of water, valley, or road, for the purpose of providing passage over the obstacle.

Depth Perception

The ability to perceive the distance of objects in three dimensions.