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

50 persons are employed to complete a work in 30 days working 12 hours each day Due to some reason t...........

Quantitative Aptitude (CGL) Time and work

50 persons are employed to complete a work in 30 days working 12 hours each day. Due to some reason, they work for only 10 hours for the first 15 days. After this, 10 persons leave the work and rest continues the work as before. How many more days are needed to complete the work than the actually estimated time?

11 1/4 days

12 2/3 days

10 1/2 days

12 days

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Explanation:

Explanation:
50 men work for 10 hours for first 15 days. Let they complete x work
So 50 * 12 * 30 * x = 50 * 10 * 15 * 1
Solve, x = 5/12
So remaining work = 7/12 which is to be done by 40 men (as 10 men leave after 15 days). Let they complete work in y days. So
50 * 12 * 30 * 7/12 = 40 * 10 * y * 1
So y = 105/4 days
So extra days = 105/4 – 15 = 45/4 days = 11 1/4 days

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