A wholesaler bought 1,200 radios for $18 each. The wholesaler sold 60 percent of the radios for $30 each and the rest for $15 each. What was the wholesaler’s average (arithmetic mean) profit per radio?
A. $2
B. $3
C. $4
D. $5
E. $6
OA is E.
Wholesaler's profit
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Wholesaler’s average (arithmetic mean) profit per radio has been asked here.So initial amount paid - 1200 * 18 = 28,800
60% sold for 30$ each + 40% sold for 15$ each = 720*30 + 480*15=21,600
Profit/radio = 28,800 - 21,600 = 7200/1200 = 6$
60% sold for 30$ each + 40% sold for 15$ each = 720*30 + 480*15=21,600
Profit/radio = 28,800 - 21,600 = 7200/1200 = 6$
Wholesaler’s average (arithmetic mean) profit per radio has been asked here.So initial amount paid - 1200 * 18 = 28,800
60% sold for 30$ each + 40% sold for 15$ each = 720*30 + 480*15=21,600
Profit/radio = 28,800 - 21,600 = 7200/1200 = 6$
60% sold for 30$ each + 40% sold for 15$ each = 720*30 + 480*15=21,600
Profit/radio = 28,800 - 21,600 = 7200/1200 = 6$
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here's the way to solve this problem
$1200 radio= $18 each (1200*18= 21,600) (cost price)
60% of 1200= 720
1200-720= 480 remaining radio
720 *30= 21,600
480*15=7,200
add both 21,600 +7200=28,800( we got the selling price)
in order to find profit SP-CP= 28,800-21,600=7200(profit)
so airthemetic profit per radio will be 7200/ 1200=$6 per radio.
I hope i made it clear.
$1200 radio= $18 each (1200*18= 21,600) (cost price)
60% of 1200= 720
1200-720= 480 remaining radio
720 *30= 21,600
480*15=7,200
add both 21,600 +7200=28,800( we got the selling price)
in order to find profit SP-CP= 28,800-21,600=7200(profit)
so airthemetic profit per radio will be 7200/ 1200=$6 per radio.
I hope i made it clear.
- AleksandrM
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I think that more than anything, this problem is testing your ability to keep all of your data orgazined on your paper and keep track of what you did and did not yet solve. Everything else is just arithmetic.
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Other approach (may be faster)
(0.6*1200*30 + 0.4*1200*15 - 1200*18) / 1200
= (0.6*30 + 0.4*15 - 18) = 0.4 * 15 = 6$
Thanks
(0.6*1200*30 + 0.4*1200*15 - 1200*18) / 1200
= (0.6*30 + 0.4*15 - 18) = 0.4 * 15 = 6$
Thanks
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60% of 1,200 is 0.6 x 1,200 = 720. If these 720 radios are sold for $30 each, they will generate a profit of 720 x (30 - 18) = 720 x 12 = $8,640.gibran wrote:A wholesaler bought 1,200 radios for $18 each. The wholesaler sold 60 percent of the radios for $30 each and the rest for $15 each. What was the wholesaler's average (arithmetic mean) profit per radio?
A. $2
B. $3
C. $4
D. $5
E. $6
The rest of 1,200 - 720 = 480 radios are sold for $15 each, but they will generate a loss of 480 x (18 - 15) = 480 x 3 = $1,440.
Therefore, the total net profit is 8,640 - 1,440 = $7,200, and thus the average profit per radio is 7,200/1,200 = $6.
Answer: E
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Hi All,
We're told that a wholesaler bought 1,200 radios for $18 each, sold 60 percent of the radios for $30 each and the rest for $15 each. We're asked for the wholesaler's AVERAGE (arithmetic mean) profit per radio. This question has a great 'math shortcut' built into it that can help us to avoid doing lots of math. The question asks for the AVERAGE profit per radio - and we know the exact percents that were sold for a profit and for a loss, so the exact number of radios is actually irrelevant.
60% of the radios are sold at a profit of $30 - $18 = $12 each.
40% of the radios are sold at a loss of $18 - $15 = $3 each.
This means that for every 5 radios sold, 3 gain a profit of $12/each while the other 2 lose $3/each. That is a 'net gain' of (3)($12) - (2)($3) = $36 - $6 = $30 for every 5 radios sold. We're NOT asked for the total profit though; we're asked for the AVERAGE profit. That would be $30/5 = $6 per radio... regardless of the number of radios involved.
Final Answer: E
GMAT assassins aren't born, they're made,
Rich
We're told that a wholesaler bought 1,200 radios for $18 each, sold 60 percent of the radios for $30 each and the rest for $15 each. We're asked for the wholesaler's AVERAGE (arithmetic mean) profit per radio. This question has a great 'math shortcut' built into it that can help us to avoid doing lots of math. The question asks for the AVERAGE profit per radio - and we know the exact percents that were sold for a profit and for a loss, so the exact number of radios is actually irrelevant.
60% of the radios are sold at a profit of $30 - $18 = $12 each.
40% of the radios are sold at a loss of $18 - $15 = $3 each.
This means that for every 5 radios sold, 3 gain a profit of $12/each while the other 2 lose $3/each. That is a 'net gain' of (3)($12) - (2)($3) = $36 - $6 = $30 for every 5 radios sold. We're NOT asked for the total profit though; we're asked for the AVERAGE profit. That would be $30/5 = $6 per radio... regardless of the number of radios involved.
Final Answer: E
GMAT assassins aren't born, they're made,
Rich