Averages Quiz 1

Question 1

Time: 00:00:00
You need a 18% acid solution for a certain test, but your supplier only ships a 13% solution and a 43% solution. You need 120 lts of the 18% acid solution. the 13% solution costs Rs 82 per ltr for the first 67 ltrs, and Rs 66 per ltr for any amount in excess of 67 liters. What is the cost of the 13% solution you should buy?

8002

8002

7012

7012

7672

7672

7342

7342

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Question 2

Time: 00:00:00
The average temperature of June, July, and August was 31 degrees. The average temperature for July, August, and September was 30 degrees. If the temperature of June was 30 degrees, find the temperature of September (in degrees).

25

25

26

26

27

27

28

28

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Question 3

Time: 00:00:00
Four of the six numbers is 1867456,1993764,2019657,2025189, 2109472,2121346 have a mean of 2068916.What is the mean of other two numbers

2006710.5

2006710.5

2067330.5

2067330.5

1930610

1930610

2022423

2022423

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Question 4

Time: 00:00:00
A packet of toffees is distributed in a class. A child who receives one-eighth of the total number of toffees get five times the average number of toffees received by the remaining children in the class. What is the strength of the class?

40

40

35

35

36

36

none of the above

none of the above

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Question 5

Time: 00:00:00
If P=(102 power x) - (98 power x) and x is a natural number greater than zero. how many values exist at units place of P?

4

4

5

5

3

3

8

8

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Question 6

Time: 00:00:00
Amith starts to work on the first day. On the second day two more friends join him. On the third day 3 more friends join him and so on they complete work in 30 days. The find the number of days 16 girls can finish the work completely given that a girl can work twice as fast as Amith and his friends.(Assume all friends of Amith as Boys)

126

126

155

155

140

140

136

136

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Question 7

Time: 00:00:00
Average of age 3 men L, M and N is 48 years. Another man O joins the group and the average becomes 44 years. If another man P whose age is 3 years more than that of O replaces L. Then the average age of M, N, O and P becomes 43 years then the age of L is?

39

39

36

36

35

35

40

40

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Question 8

Time: 00:00:00
A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half. The number of pupils in the class is?

47

47

44

44

39

39

40

40

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Question 9

Time: 00:00:00
Average weight of 25 boys in a class is 48 kgs. The average weight of the class of 40 students is 45 kgs. What is the average weight of the 15 girls in the class? 39 kgs

42 kgs

42 kgs

42.5 kgs

42.5 kgs

40 kgs

40 kgs

44 kgs

44 kgs

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Question 10

Time: 00:00:00
The mean weight of a group of seven boys is 56 kg. The individual weights (in kg) of six of them are 52, 57, 55, 60, 59 and 55. Find the weight of the seventh boy?

57 kg

57 kg

54 kg

54 kg

53 kg

53 kg

55 kg

55 kg

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