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Chapter 9: Problem 66

Select the best estimate for the weight of the given item. The weight of a bicycle a. \(140 \mathrm{~kg}\) b. \(140 \mathrm{hg}\) c. \(140 \mathrm{dag}\) d. \(140 \mathrm{~g}\)

Short Answer

Expert verified
The best estimate for the weight of a bicycle is \(140 \mathrm{hg}\) which equals 14 kg.

Step by step solution

01

Understanding Weight Units

The weights are given in kilograms (kg), hectograms (hg), decagrams (dag), and grams (g). One should know that 1 kilogram equals 10 hectograms, 1 hectogram equals 10 decagrams, and 1 decagram equals 10 grams. So, 1kg = 100 dag = 1000 g.
02

Estimating the Weight of a Bicycle

A typical bicycle is known to weigh between 10 and 20 kilograms. This provides a reference point for the weight we should expect.
03

Comparing with Given Options

Given the options, we find that only option a gives a weight in kilograms but it's 140 kg which is way more than the typical bicycle's weight. Let's convert each option into kilograms for easier comparison: option b is approximately 14 kg, option c is approximately 1.4 kg, and option d is 0.14 kg.
04

Choosing the Best Estimate

Comparing the weights, options c and d are less than a typical bicycle's weight while option a is way more. Therefore, b which equals 14 kg is the most reasonable estimate for a bicycle's weight.

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