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Chapter 1: 8 (page 28)

While driving in an exotic foreign land, you see a speed limit sign that reads 180,000 furlongs per fortnight. How many miles per hour is this? (One furlong is 1/8 mile, and a fortnight is 14 days. A furlong originally referred to the length of a plowed furrow.)

Short Answer

Expert verified

The speed is 67 miles/hour

Step by step solution

01

Conversion of furlong and fornight

Furlong and fornight are the units used in olded days to measure the distance and the time travelled by a person respectively.

Given data:

The speed limit is v=180,000 furlongs per fortnight.

The given conversion is,

1furlong=18mile1fortnight=14days

02

Conversion into mile/ hour

The conversion of velocity is shown below,

v=180000furlongsperfortnightv=180000furlongsfortnight脳1fortnight14days脳1day24hrs脳18miles1furlongv=67miles/hr

Therefore, It is concluded that the speed limit is 67 miles/hour.

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