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There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?

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There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?  [#permalink]

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New post 29 Jul 2019, 22:25
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Re: There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?  [#permalink]

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New post 29 Jul 2019, 22:47
A confusion
Is it 7times 3 quarters

Or is it a mixed numeral?

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Re: There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?  [#permalink]

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New post 29 Jul 2019, 23:05
1/2 pound = 8 ounces
1 pound = 16 ounces

7 3/4 = 31/4

31/4*16 = 124

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Re: There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?  [#permalink]

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New post 30 Jul 2019, 07:02
Bunuel wrote:
There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 pounds?

A. 12 ounces
B. 86 ounces
C. 119 ounces
D. 124 ounces
E. 138 ounces


1 lbs = 16 ounces
so 31/4 lbs = 16*31/4 ; 124 ounces
IMO D
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Re: There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?  [#permalink]

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New post 30 Jul 2019, 08:16
Given:

8 ounces = \(\frac{1}{2} pound\) ->(a)

Multiplying (a) by 2 on both sides
16 ounces = 1 pound -> (b)

Multiplying (a) by \(\frac{3}{4}\) on both sides
12 ounces = \(\frac{3}{4}\) pounds -> (c)

Multiplying (a) by 7 on both sides
112 ounces = 7 pound -> (d)

Adding (c) and (d) we get
12 ounces + 112 ounces = 7 pounds + \(\frac{3}{4}\) pounds
124 ounces = \(7\frac{3}{4}\) pounds

Answer D
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Re: There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?  [#permalink]

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New post 30 Jul 2019, 08:28
8 ounces= 0.5 pound
4 ounces = 0.25 pound
16 ounces =1 pound

\(7.75 pounds= (7*16) + (3*4) Ounces= (112+12) Ounces=124 ounces.\)

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Re: There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?  [#permalink]

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New post 05 Aug 2019, 18:14
Bunuel wrote:
There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 pounds?

A. 12 ounces
B. 86 ounces
C. 119 ounces
D. 124 ounces
E. 138 ounces


We convert 7 3/4 to 31/4 and create the proportion:

8/(1/2) = n/(31/4)

16 = 4n/31

16 x 31 = 4n

4 x 31 = n

124 = n

Answer: D
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Re: There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?   [#permalink] 05 Aug 2019, 18:14

There are 8 ounces in a 1/2 pound. How many ounces are in 7 3/4 lbs?

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