Eight hours of work time paid for approximately how many more dozen eggs in 1997

游客2025-02-23 33

问题 Eight hours of work time paid for approximately how many more dozen eggs in 1997 than it did in 1919 ?

选项 A、50
B、70
C、90
D、110
E、130

答案 C

解析 Since the work times are given in minutes, first convert 8 hours to 480 minutes.
In 1919, the work time that paid for 1 dozen eggs was approximately 80 minutes, so 480 minutes paid for 480/80, or 6 dozen eggs.
In 1997, the work time that paid for 1 dozen eggs was approximately 5 minutes, so 480 minutes paid for 480/5, or 96 dozen eggs.
Thus 8 hours of work time paid for 90 dozen more eggs in 1997 than it paid for in 1919. The correct answer is Choice C.
This explanation uses the following strategies.
Strategy 4: Translate from a Figure to an Arithmetic or Algebraic Representation
Strategy 5: Simplify an Arithmetic or Algebraic Representation
Strategy 9: Estimate

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