Sun	Mon	Tue	Wed	Thu	Fri	Sat
23	24	25	26	27	28	1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25	26	27	28	29
30	31	1	2	3	4	5

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Multiple Choice Questions

A and B can complete a work in 12 and lsquo n rsquo days respectively They worked for 3 days and fou...........

Quantitative Aptitude ( Phase -I) Time and work

A and B can complete a work in 12 and ‘n’ days respectively. They worked for 3 days and found 3/5th of the work as pending. If C who can complete the same work in 24 days also works with them, how much work will remain uncompleted after 4 days?

8/19

15/31

2/9

3/10

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Explanation:

Solution:
3/5th is pending means 2/5th is completed. So
(1/12 + 1/n) × 3 = 2/5
Solve, B can complete work in n = 20 days.
Now: in 4 days all A, B, C completed
(1/12 + 1/20 + 1/24) × 4 = 7/10 of work
So pending work = 1 – 7/10 = 3/10 of work.

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