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There are approximately 2.2 pounds in one kilogram. To the nearest eig

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There are approximately 2.2 pounds in one kilogram. To the nearest eig  [#permalink]

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New post 29 Jan 2019, 04:51
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There are approximately 2.2 pounds in one kilogram. To the nearest eighteenth, how many eighteenths of a kilogram are there in one pound?

A. 7
B. 8
C. 9
D. 39
E. 40

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There are approximately 2.2 pounds in one kilogram. To the nearest eig  [#permalink]

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New post Updated on: 30 Jan 2019, 03:27
Bunuel wrote:
There are approximately 2.2 pounds in one kilogram. To the nearest eighteenth, how many eighteenths of a kilogram are there in one pound?

A. 7
B. 8
C. 9
D. 39
E. 40


given
1kg = 2.2 lbs
1 lbs = 1/2.2 kgs
= 10/22
need to find 1/18 of kgs in lbs
x/18 = 10/22
x= 18*10/22
x= 8
IMO B
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Originally posted by Archit3110 on 29 Jan 2019, 05:00.
Last edited by Archit3110 on 30 Jan 2019, 03:27, edited 1 time in total.
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Re: There are approximately 2.2 pounds in one kilogram. To the nearest eig  [#permalink]

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New post 30 Jan 2019, 03:23
Archit3110 wrote:
Bunuel wrote:
There are approximately 2.2 pounds in one kilogram. To the nearest eighteenth, how many eighteenths of a kilogram are there in one pound?

A. 7
B. 8
C. 9
D. 39
E. 40


given
1kg = 2.2 lbs
so 18 kgs
2.2* 18 = ~ 40
IMO E
chetan2u Bunuel
please provide solution for this question



Ok, what does tenth of anything mean, it will be 1/10 ..
Here eighteenth would mean 1/18 of a kg..

Now 2.2 pounds is 1 kg or 1 pound =\(\frac{1}{2.2}\)kg..
So we are looking for how many \(\frac{1}{18}\) are there in \(\frac{10}{22}\)..
So Ans = \(\frac{18*10}{22}=\frac{90}{11}\)=8.2... closer to 8..

B
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Re: There are approximately 2.2 pounds in one kilogram. To the nearest eig  [#permalink]

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New post 01 Feb 2019, 18:06
Bunuel wrote:
There are approximately 2.2 pounds in one kilogram. To the nearest eighteenth, how many eighteenths of a kilogram are there in one pound?

A. 7
B. 8
C. 9
D. 39
E. 40


Since 1 kg = 2.2 lbs, so 1 lb = 1/2.2 = 10/22 = 5/11 kg. Therefore, there are (5/11)/(1/18) = 90/11 ≈ 8 eighteenths of a kilogram are there in one pound.

Alternate Solution:

Let’s first set up a proportion to find the number of kilograms in 1 pound.

2.2 pounds/1 kilogram = 1 pound/x kilograms

2.2x = 1

x = 1/2.2

Thus, 1 pound is 1/2.2 kilograms, or 0.454545 kilograms.

Now, we set up another proportion to convert the equivalent of 0.454545 kilograms to eighteenths (of a kilogram).

0.454545 = y/18

y ≈ 8.18

This means that 1/2.2 kilograms (0.454545 kilograms) is approximately equal to 8 eighteenths kilograms.

Answer: B
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Re: There are approximately 2.2 pounds in one kilogram. To the nearest eig   [#permalink] 01 Feb 2019, 18:06
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There are approximately 2.2 pounds in one kilogram. To the nearest eig

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