RRB Paramedical Staff Nurse Model Paper 2

Total money =Rs‌1200
Time taken by first to complete the work =8 days
Thus one day work of first person =‌

1

8

Similarly
One day work of second person =‌

1

12

One day work of third person =‌

1

16

Let fourth person does the work in x days
Then, according to the question,
‌

1

8

+‌

1

12

+‌

1

16

+‌

1

x

=‌

1

3

⇒‌

1

x

=‌

1

3

−‌

1

8

−‌

1

12

−‌

1

16

⇒‌

1

x

=‌

16−6−4−3

48

=‌

3

48

=‌

1

16

⇒x=16
Now, ratio of work done by first, second, third and fourth persons
=‌

1

8

:‌

1

12

:‌

1

16

:‌

1

16

=6:4:3:3 (taking LCM)
So, amount got by fourth person
=‌

3

16

×1200= Rs. 225