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If a kilogram is equal to approximately 2.2 pounds, which of the follo

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If a kilogram is equal to approximately 2.2 pounds, which of the follo  [#permalink]

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13 Jan 2019, 11:00
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If a kilogram is equal to approximately 2.2 pounds, which of the following is the best approximation of the number of kilograms in one pound?

A. $$\frac{11}{5}$$

B. $$\frac{1}{4}$$

C. $$\frac{5}{11}$$

D. $$\frac{1}{3}$$

E. $$\frac{1}{5}$$

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Re: If a kilogram is equal to approximately 2.2 pounds, which of the follo  [#permalink]

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15 Jan 2019, 07:10
If a kilogram is equal to approximately 2.2 pounds, which of the following is the best approximation of the number of kilograms in one pound?

A. $$\frac{11}{5}$$

B. $$\frac{1}{4}$$

C. $$\frac{5}{11}$$

D. $$\frac{1}{3}$$

E. $$\frac{1}{5}$$

1 kg = 2.2 lbs
1 lbs = 1/2.2 = 10/22 = 5/11
IMO C
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Re: If a kilogram is equal to approximately 2.2 pounds, which of the follo  [#permalink]

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15 Jan 2019, 09:10
If a kilogram is equal to approximately 2.2 pounds, which of the following is the best approximation of the number of kilograms in one pound?

A. $$\frac{11}{5}$$

B. $$\frac{1}{4}$$

C. $$\frac{5}{11}$$

D. $$\frac{1}{3}$$

E. $$\frac{1}{5}$$

$$1 \ kg = 2.2 \ lb$$

Or, $$10 \ kg = 22 lb$$

Or, $$22 \ lb = 10 \ kg$$

Or, $$11 \ lb = 5 \ kg$$

Or, $$1 \ lb = \frac{5}{11} \ kg$$, Thus Answer must be (C)
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Re: If a kilogram is equal to approximately 2.2 pounds, which of the follo  [#permalink]

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15 Jan 2019, 22:09
1kg = 2.2 pound
hence 1 pound = \frac{1}{2.2}
or \frac{10}{22}
simplifying \frac{5}{11}
ans C
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Re: If a kilogram is equal to approximately 2.2 pounds, which of the follo  [#permalink]

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17 Jan 2019, 19:00
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If a kilogram is equal to approximately 2.2 pounds, which of the following is the best approximation of the number of kilograms in one pound?

A. $$\frac{11}{5}$$

B. $$\frac{1}{4}$$

C. $$\frac{5}{11}$$

D. $$\frac{1}{3}$$

E. $$\frac{1}{5}$$

The number of kilograms in one pound is 1/2.2 = 10/22 = 5/11.

Alternate Solution:

We can set up a proportion: One kilogram is to 2.2 pounds as x kilograms is to 1 pound:

1/2.2 = x/1

1/2.2 = x

10/22 = x

5/11 = x

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Re: If a kilogram is equal to approximately 2.2 pounds, which of the follo   [#permalink] 17 Jan 2019, 19:00
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