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A certain computer manufacturing firm last year produced 82 percent of
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13 Jan 2021, 06:11
13 Jan 2021, 06:11
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A certain computer manufacturing firm last year produced 82 percent of its computers using parts made by its subsidiary company. If the remaining 10,800 computers were produced using parts purchased from another parts manufacturer, how many computers were produced by the computer manufacturing firm altogether?
A. 5,400
B. 6,000
C. 18,000
D. 60,000
E. 600,000
A. 5,400
B. 6,000
C. 18,000
D. 60,000
E. 600,000
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Re: A certain computer manufacturing firm last year produced 82 percent of
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13 Jan 2021, 07:14
13 Jan 2021, 07:14
1
Carcass wrote:
A certain computer manufacturing firm last year produced 82 percent of its computers using parts made by its subsidiary company. If the remaining 10,800 computers were produced using parts purchased from another parts manufacturer, how many computers were produced by the computer manufacturing firm altogether?
A. 5,400
B. 6,000
C. 18,000
D. 60,000
E. 600,000
A. 5,400
B. 6,000
C. 18,000
D. 60,000
E. 600,000
ALWAYS scan the answer choices before performing any calculations. In this case, most of the answer choices are spread out nicely, so I might get a little aggressive with my ESTIMATION.
A certain firm produced 82 percent of its computers using parts made by its subsidiary company
So, about 4/5 of the computers used parts from subsidiary company
This leaves 1/5 of the computers REMAINING
...the REMAINING 10,800 computers were produced using parts purchased from another parts manufacturer
Ah! So, 10,800 represents the REMAINING 1/5 of the computers.
...how many computers were produced by the computer manufacturing firm altogether?
10,800 represents 1/5 of the computers, the TOTAL number of computers ≈ (10,800)(5) ≈ (11,000)(5) ≈ 55,000
When we check the answer choices, we see that D is the ONLY answer that's close to 55,000
Cheers,
Brent
Re: A certain computer manufacturing firm last year produced 82 percent of
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01 Jun 2021, 14:00
01 Jun 2021, 14:00
1
other solution
assume :
The total all computer is x
producing computer sing parts made by its subsidiary company in the last year is y ( and y= (82/100)*x)
the remaining computer = 10800
then :
x= y+10800
=(82/100)*x+10800
x-(82/100)*x=10800
(18/100)x=10800
x=1080000/18
x= 60000
the choice is D
assume :
The total all computer is x
producing computer sing parts made by its subsidiary company in the last year is y ( and y= (82/100)*x)
the remaining computer = 10800
then :
x= y+10800
=(82/100)*x+10800
x-(82/100)*x=10800
(18/100)x=10800
x=1080000/18
x= 60000
the choice is D
