Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 9 - Section 9.7 - Temperature and Conversions Between the U.S. and Metric Systems - Exercise Set: 27

Answer

Yes, 100 kg is approximately 15 stone and 10 pounds.

Work Step by Step

If we use the conversion rate given in the exercise is: $15\text{ st } 10\text{ lb}= 15\times 14 \text{ lb}+10 \text{ lb}=220 \text{ lb}$ Now we can convert from pounds to kilograms to check the equivalency, we have to consider the following conversion rate: $ 2.20\text{ lb}\approx 1 \text{ kg}$ After dividing both sides by $2.20$ we get: $1\text{ lb}\approx\frac{1}{2.20} \text{ kg} $ We multiply both sides by 220 in order to get the answer to the question: $220 \text{ lb} \approx \frac{220}{2.20}\text{ kg}= 100 \text{ kg} $ Yes, 100 kg is approximately 15 stone and 10 pounds.
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