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Sunoonazeez
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Last visit: 06 Jul 2022
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Schools: ESCP MiM "24 LBS MiM "23 ESSEC HEC MiM "24 ESADE MiM"23
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18 Jan 2022, 07:47
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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:
45%
(medium)
Question Stats:
67% (02:21) correct
33%
(02:46)
wrong
based on 43
sessions
History
Date
Time
Result
Not Attempted Yet
A flower vase manufacturer offers a wide variety of ceramic flower vase to its customers. If he charges a fixed price of 20 cents per square centimetre of ceramic used, what will be the price, in dollars, of a rectangular flower vase which has base dimensions of 10 and 15 centimetres, and a height of 12 centimetres? (100 cents = 1 dollar)
.
A. $144
B. $150
C. $156
D. $500
E. $750
.
A. $144
B. $150
C. $156
D. $500
E. $750
PRI23YA
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20 Jan 2022, 10:39
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I think I'm lost here, isn't the answer $180? please correct me, if wrong.
21 Jan 2022, 17:49
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PRI23YA
Since this is a vase the top part has to be open! Therefore when calculating the surface area you need to subtract the base (10*15).
Solution:
Let the dimensions be:
w=10
l=15
h=12
Surface area = 2(wl + wh + lh) = 900
Subtract the top part of the vase: 900 - wl = 750
Multiply the area by 20 cents, as this is price per unit squared: 750*20 = 15000
Now divide by 100 to get price in dollars: 15000/100 = $150
==> B
