Question
To make a bakery’s signature chocolate muffins, a baker needs 2.5 ounces of chocolate for each muffin. How many pounds of chocolate are needed to make 48 signature chocolate muffins? (1 pound = 16 ounces)
- 7.5
- 10
- 50.5
- 120
The correct answer is: 7.5
We are given that 2.5 ounces of chocolate are needed for each muffin
Then the number of ounces of chocolate needed to make 48 muffins
48 × 2.5 = 120 ounces
Since 1 pound = 16 ounces,
number of pounds that is equivalent to 120 ounces
= 7.5 pounds.
Therefore, 7.5 pounds of chocolate are required to make the 48 muffins.
Let us consider option B, If 10 pounds of chocolate were needed to make 48 muffins, then the total number of ounces of chocolate needed would be
10 × 16 = 160 ounces.
The number of ounces of chocolate per muffin would then be
= 3.33 ounces per muffin, which is not equal to 2.5 ounces per muffin. Therefore, option B is incorrect
Option C and D are also incorrect.
Similarly by following the same procedures as used to test choice B gives
For option C => 16.8 ounces per muffin
For option D => 40 ounces per muffin
Which is not 2.5 ounces per muffin. Therefore, 50.5 and 120 pounds cannot be the number of pounds needed to make 48 signature chocolate muffins.
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A polling agency recently surveyed 1,000 adults who were selected at random from a large city and asked each of the adults, “Are you satisfied with the quality of air in the city?” Of those surveyed, 78 percent responded that they were satisfied with the quality of air in the city. Based on the results of the survey, which of the following statements must be true?
I. Of all adults in the city, 78 percent are satisfied with the quality of air in the city.
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For example, Knowledge of consumer purchasing patterns can be used to understand product demand better and increase sales.
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Online Survey
Paper Survey
Telephonic Survey
Face-to-Face Interview
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Note:
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Whenever there is an unknown constant in the given equation, we must always try to find the value of that constant first with the help of the given conditions. Another way to solve this question is; observe that the equation can be written as x y = k , that is, the product of the x co-ordinate and y co-ordinate always remains a constant. As the point (2, 6) satisfies it, we get that constant to be 12. So we check for which of the points in the options, the product of x co-ordinate and y co-ordinate is 12.
, where a is a positive constant and
