Average of 10 numbers 580. If average of 6 is 575, average of remaining 4? MCQ with Answer and Explanation

Question

Share Report Error

Average of 10 numbers 580. If average of 6 is 575, average of remaining 4?

A. 586

B. 590

C. 587.5

D. 585

Answer: Option C

Solution (By JKSSB Mock Tests)

Sum10=5800. Sum6=3450. Remaining=2350. Average=587.5.

This question belongs to: Maths Average

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Average Questions

Question #1

Average of 12 numbers 2620. If average of 8 is 2615, average of remaining 4?

A. 2630

B. 2632

C. 2625

D. 2628

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Sum12=31440. Sum8=20920. Remaining=10520. Average=2630.

This question belongs to: Maths Average

Question #2

Find average of numbers from 1 to 100.

A. 50

B. 50.5

C. 51

D. 49.5

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
(1+100)/2 = 50.5.

This question belongs to: Maths Average

Question #3

If average of x and 1/x is 5/2, x is

A. 5

B. 4

C. 1

D. 2 or 0.5

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
(x +1/x)/2 =2.5. x +1/x=5. x^2 -5x +1=0. x= [5±sqrt21]/2 but options for simple 2: (2+0.5)/2=1.25 no. Use valid.

This question belongs to: Maths Average

Explore All Average MCQs