Average of 9 numbers 1890. If average of 6 is 1885, average of remaining 3? MCQ with Answer and Explanation

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Average of 9 numbers 1890. If average of 6 is 1885, average of remaining 3?

A. 1898

B. 1905

C. 1895

D. 1900

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum9=17010. Sum6=11310. Remaining=5700. Average=1900.

This question belongs to: Maths Average

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Question #1

The average of 360,480,600 is

A. 480

B. 470

C. 490

D. 475

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Correct Answer: Option A

Explanation:
1440/3=480.

This question belongs to: Maths Average

Question #2

Average of 8 numbers is 25. If 3 is added to each number, what will be the new average?

A. 26

B. 28

C. 25

D. 27

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Correct Answer: Option B

Explanation:
When a constant is added to each number, the average also increases by the same constant. New average = 25 + 3 = 28.

This question belongs to: Maths Average

Question #3

Average speed for 3 equal distances at 20,30,60 km/h?

A. 33.33

B. 40

C. 36.67

D. 30 km/h

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Correct Answer: Option D

Explanation:
3d / (d/20 +d/30 +d/60) =3 / (0.05+0.0333+0.0167) =3/0.1 =30.

This question belongs to: Maths Average

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