Work & Time 

Pratice Question : 20

Class IX 

No. of Question 20

TIME AND WORK

1.       A alone can do a work in 12 days. B alone can do the same
work in 20 days. How many days they will take to complete the same work
together?

2.       A and B together can do a work in 15 days. A alone can do
this work in 20 days.B alone will complete the same wordk in how many days?

3.       A,B and C can do a work in 10,12 and 15 days
respectively. How many days they will take to complete the same work together?

4.      A,B and C together can a work in 10 days.A alone can do
the same work in 20 days and B alone can do the same work in 25 days.How many
days C alone will take to complete the same work alone?

5.       16 man can do a work
in 24 days how many days 32 men will take to complete the same work?

6.      25 man can do a work
in 48 days.How many man will be required to complete the same in just 15 days?

7.       36 man can do a work
in 16 days how many days 24 man will take to complete the same work?

8.      18 man can do a work
in 42 days.How many man will be required to complete the same in just 12 days?

9.      2 man or 4 women can
do a work in 18 days. How many days 3 man and 6 women will take to complete the
same work?

10.     3 man  or 9 woman can do a work in 24 days how many
days 2 man and 6 women will take to complete the same work?

11.      5 man  or 8 woman can do a work in 158 days how many
days 8 man and 3 women will take to complete the same work?

12.     3 man or 7 woman can do a work in 172 days how many days
4 man and 5 women will take to complete the same work?

13.     2 man or 5 woman can do a work in 76 days how many days 3
man and 2 women will take to complete the same work?

14.   2 man or 3 woman or 5 children can do a work
in 118 days than how many days 1 man and 2 woman and 4 children will take to
complete the same work?

15.     1 man or 2 woman or 2 children can do a work in 64 days
than how many days 2 man and 3 woman and 1 children will take to complete the
same work?

16.     3 men or 2 women or 1 child can do a work in 46 days than
how many days 1 man and 3 woman and 2 children will take to complete the same
work?

17.   3 man and 4 woman can a work in 24 days than how many
days 2 man and 5 woman will take to complete the same work?

18.    4 man and 5 woman can a work in 21 days than how many
days 2 man and 3 woman will take to complete the same work if work of 2 women
is equal to the work of 1 man?

19.   8 man and 5 woman can a work in 22 days than how many
days 3 man and 2 woman will take to complete the same work if work of 3 women
is equal to the work of 1 man?

20.    5 vkneh o 8 efgyk, fdlh dke dks 20 fnu esa dj
ldrh gS 3 vkneh o 6 efgyk, bl dke dks 30 fnu esa dj ldrs gS rks 2 vkneh o 5
efgyk, bl dke