Average Questions Practice Question and Answer
8 Q: While purchasing one item costing Rs.400, one has to pay sales tax at 7 % and on another costing Rs. 6400, the sales tax was 9%. The percentage of sales tax one has to pay, taking these items together on an average is:
1118 05f2a83f47079852b553cf6d8
5f2a83f47079852b553cf6d8- 1
- 2false
- 3false
- 4
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Answer : 4. " "
Q: The average weight of three men A, Band C is 84 kg. D joins them and the average weight of the four becomes 80 kg. If E whose weight is 3 kg more than that of D, replaces A, the average weight of B, C, D and E becomes 79 kg. The weight of A is:
1117 05dcb9f2ba09a1624d197adbd
5dcb9f2ba09a1624d197adbd- 165 kg .false
- 270 kg .false
- 375 kg.true
- 480kg .false
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Answer : 3. "75 kg. "
Q: The average of 6 numbers is 20. If a number is removed then average becomes 15. In place of removed number by adding a number 39 the average of new 6 number will be__
1115 05f7ede2a3c7d8710e020d2ef
5f7ede2a3c7d8710e020d2ef- 117false
- 220false
- 319true
- 418false
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Answer : 3. "19"
Q: The average weight of 5 men is increased by 4 kg. If one of them who weigh 121 kg is replaced by another man, then what is the weight of the new man?
1110 0631f341b08ed0659bb216c04
631f341b08ed0659bb216c04- 1141 kgtrue
- 2142 kgfalse
- 3140 kgfalse
- 4139 kgfalse
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Answer : 1. "141 kg "
Q: The average marks of a student in an examination is 63, if he had scored 20 marks in geography and 2 more marks in history, his average marks would have been 65. How many subjects were there in the exam?
1098 05fb39f1aa0d2c16147e1c750
5fb39f1aa0d2c16147e1c750- 110false
- 211true
- 312false
- 49false
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Answer : 2. "11"
Q: Average age of 6 boys is 14 years. Average age of 11 girls is 12 years. What is the average age (in years) of all boys and girls?
1080 160642806cfdbf24a55622d91
60642806cfdbf24a55622d91- 119.3false
- 214.6false
- 312.7true
- 48.5false
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Answer : 3. "12.7"
Q: The average of a collection of 20 measurements was calculated to be 56 cm . But later it was found that a mistake had occurred in one of the measurements which was recorded as 64 cm, but should have been 61 cm. The correct average must be:
1077 05f2a5d10cef453383f1e2813
5f2a5d10cef453383f1e2813- 155.85 cmtrue
- 256.15 cmfalse
- 353 cmfalse
- 454.5 cmfalse
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Answer : 1. "55.85 cm "
Q: There are 1600 students in a college, whose average weight is 50 kg. If average weight of boys is 54 kg. and average weight of girls is 38 kg. Then find the number of girls in the school.
1065 0604876676b33de2b73845ede
604876676b33de2b73845ede- 1300false
- 2200false
- 3800false
- 4400true
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