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15 Nov 2018, 03:50
Kudos
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
80% (01:30) correct
20%
(01:43)
wrong
based on 171
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If p is a price in whole cents, which of the following could NOT be the result of increasing p by 20%?
A. $1.20
B. $1.25
C. $1.38
D. $1.80
E. $2.52
A. $1.20
B. $1.25
C. $1.38
D. $1.80
E. $2.52
15 Nov 2018, 06:44
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Bookmarks
Bunuel
If p is a price in whole cents, which of the following could NOT be the result of increasing p by 20%?
A. $1.20
B. $1.25
C. $1.38
D. $1.80
E. $2.52
A. $1.20
B. $1.25
C. $1.38
D. $1.80
E. $2.52
In order to check which of the following could NOT be got by increasing p by 20%, we need to divide
the answer options by 1.2 and if we don't end up with a whole number - that is our answer!
Evaluating answer options
A. $1.20/1.2 = 1
B. $1.25/1.2 = 1.0416 (This isin't a whole number)
C. $1.38/1.2 = 1.15
D. $1.80/1.2 = 1.5
E. $2.52/1.2 = 2.1 (Option B)
15 Nov 2018, 07:06
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Bookmarks
pushpitkc, nice solution.
20 % increase = 100+20 = 120% = 1.2 times the original value.
We can convert the dollars to cents to make decimal part look clear.
1 dollar = 100 cents
Finding original value of p from the options provided, we will try to find the option which gives non-integer value.
A. 120/1.2 = 100
B. 125/1.2 = 104.1... (This is not a whole number)
C. 138/1.2 = 115
D. 180/1.2 = 150
E. 252/1.2 = 210
Hence Answer = B
In order to check which of the following could NOT be got by increasing p by 20%, we need
to divide the answer options by 1.2 and if we end up with a whole number
A. $1.20/1.2 = 1
B. $1.25/1.2 = 1.0416 (This isin't a whole number)
C. $1.38/1.2 = 1.15
D. $1.80/1.2 = 1.5
E. $2.52/1.2 = 2.1 (Option B)
20 % increase = 100+20 = 120% = 1.2 times the original value.
We can convert the dollars to cents to make decimal part look clear.
1 dollar = 100 cents
Finding original value of p from the options provided, we will try to find the option which gives non-integer value.
A. 120/1.2 = 100
B. 125/1.2 = 104.1... (This is not a whole number)
C. 138/1.2 = 115
D. 180/1.2 = 150
E. 252/1.2 = 210
Hence Answer = B
pushpitkc
Bunuel
If p is a price in whole cents, which of the following could NOT be the result of increasing p by 20%?
A. $1.20
B. $1.25
C. $1.38
D. $1.80
E. $2.52
A. $1.20
B. $1.25
C. $1.38
D. $1.80
E. $2.52
In order to check which of the following could NOT be got by increasing p by 20%, we need
to divide the answer options by 1.2 and if we end up with a whole number
A. $1.20/1.2 = 1
B. $1.25/1.2 = 1.0416 (This isin't a whole number)
C. $1.38/1.2 = 1.15
D. $1.80/1.2 = 1.5
E. $2.52/1.2 = 2.1 (Option B)
