12 labours construct 120 toys in 8 days working 8 hours per day. If two of them leave the work, t

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01 Feb 2010 working contract

12 labours construct 120 toys in 8 days working 8 hours per day. If two of them leave the work,
then how many days are required to do the same work with a working of 6 hours per day.

OPtion

(1) 15
(2) 17.2
(3) 12.8
(4) 14
(5) 11.8
(6) 15.4
(7) 12
(8) 10.8
(9) 16
(10) 24.2

Solution

Labour Toy Day Hour
12 120 8 8
1 120 8*12 8
1 120 8*12*8 1
10 120 8*12*8/10 1
10 120 8*12*8*/10*6 6
10 120 12.8 6

Correct Option: 3 Best Solution (5)

Mehul MKDP   14 years AGO

12*64/10 = 76.8
76.8 / 6 = 12.8

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hitesh gakhar   14 years AGO

12*8*8=10*6*x
=> x=12.8

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Dimple   14 years AGO

Time taken by 12 labours to construct 120 toys working 8 hours per day = 8 days .........
Time taken by 1labour to construct 120 toys working 1 hours per day = 8 *12*8days = 768 days
Time taken by 10 labours to construct 120 toys working 6 hours per day = 768/(10*6) = 768/60 = 12.8 days

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Shikha   14 years AGO

Ignoring 120 toys , as same work ( same no of toys ) are to be constructed,

No. of days = (12x8x8)/( 10x6)= 64/5 = 12.8

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Eliza    14 years AGO

let x be the no of days then we have 10*6x=12*8*8
hence x=(768/60)=12.8
hence answer is option(3)12.8

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