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22 Mar 2023, 01:59
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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:
68% (01:47) correct
32%
(01:40)
wrong
based on 229
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In a cafeteria, the manager observed that 30 percent of the customers ordered a burger along with a lemonade. However, 40 percent of the customers who ordered burger did not order lemonade. What percent of the customers did not order burger?
(A) 20%
(B) 25%
(C) 30%
(D) 50%
(E) 60%
Posted from my mobile device
(A) 20%
(B) 25%
(C) 30%
(D) 50%
(E) 60%
Posted from my mobile device
22 Mar 2023, 02:05
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Given: In a cafeteria, the manager observed that 30 percent of the customers ordered a burger along with a lemonade.
However, 40 percent of the customers who ordered burger did not order lemonade.
Asked: What percent of the customers did not order burger?
.6x% = 30%
x = 30/.6 = 50
Percentage of customers who did not order burger = 50%
IMO D
However, 40 percent of the customers who ordered burger did not order lemonade.
Asked: What percent of the customers did not order burger?
| Burger | No Burger | Total | |
| Lemonade | .6x%=30% | ||
| No Lemonade | .4x% | ||
| Total | x% | 100%-x% | 100% |
.6x% = 30%
x = 30/.6 = 50
| Burger | No Burger | Total | |
| Lemonade | .6x%=30% | ||
| No Lemonade | .4x%=20% | ||
| Total | x% = 50% | 100%-50%=50% | 100% |
Percentage of customers who did not order burger = 50%
IMO D
23 Mar 2023, 02:02
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Pretty simple question! 30% of total customers ordered both, and 40% of the customers who ordered Burger didn't order lemonade. Therefore, the remaining 60% must have ordered both.
So, 60% of customers who ordered Burger = 30% of total customers.
Therefore, 100% of customers who ordered Burger = 50% of total customers.
So, customers who didn't order burger (or nothing at all) belongs to the remaining 50%.
So, 60% of customers who ordered Burger = 30% of total customers.
Therefore, 100% of customers who ordered Burger = 50% of total customers.
So, customers who didn't order burger (or nothing at all) belongs to the remaining 50%.
