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26 Jul 2018, 00:35
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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:
35%
(medium)
Question Stats:
69% (01:34) correct
31%
(01:48)
wrong
based on 468
sessions
History
Date
Time
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Not Attempted Yet
The usage of sugar of a family of 3 adults and 2 children was 13 kg in a certain month. If the monthly average usage of sugar for an adult is 3 kg and for a child is 1 kg, by what percent the specific month’s sugar consumption was more or less than the typical usage?
- A. 22.22% more
B. 18.18% more
C. 15.38% more
D. 15.38% less
E. 18.18% less
26 Jul 2018, 02:15
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monthly average usage of sugar for an adult is 3 kg
monthly average usage of sugar for a child is 1 kg
monthly average usage of sugar for a family of 3 adults and 2 children = 3 * 3 + 2 * 1 = 9 + 2 = 11
Actual usage of sugar of a family of 3 adults and 2 children was 13 kg
percent of specific month’s sugar consumption over the typical usage = \(\frac{difference}{original} * 100\)
=> \(\frac{13-11}{11} * 100\) = \(\frac{2}{11} * 100\)
= 18.18% more more than average monthly consumption because specify month consumption > average monthly consumption.
Hence option B
monthly average usage of sugar for a child is 1 kg
monthly average usage of sugar for a family of 3 adults and 2 children = 3 * 3 + 2 * 1 = 9 + 2 = 11
Actual usage of sugar of a family of 3 adults and 2 children was 13 kg
percent of specific month’s sugar consumption over the typical usage = \(\frac{difference}{original} * 100\)
=> \(\frac{13-11}{11} * 100\) = \(\frac{2}{11} * 100\)
= 18.18% more more than average monthly consumption because specify month consumption > average monthly consumption.
Hence option B
30 Jul 2018, 05:50
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Solution
Given:
- • The monthly average usage of sugar for an adult is 3 kg and for a child is 1 kg
• The usage of sugar of a family of 3 adults and 2 children was 13 kg in a certain month
To find:
- • By what percent the specific month’s sugar consumption was more or less than the typical usage
Approach and Working:
As per the typical usage,
- • Total usage of 3 adults in a month = 3 * 3 = 9 kg
• Total usage of 2 children in a month = 2 * 1 = 2 kg
• So, total usage of all = 9 + 2 = 11 kg
In the specified month, total usage is 13 kg.
As 13 > 11, we can say the usage is more than typical usage.
- • Percentage more in terms of usage = \(\frac{13 – 11}{11}\) * 100 = 18.18%
Hence, the correct answer is option B.
Answer: B
