A starts a business on Jan.1 with an investment of Rs.80,000. Four months later B joins with an investment of Rs.60,000. The percentage of profit B will get at the end of the year is nearly 
 1.42%
 2.37%
 3.33%
 4.31%

       (1) 8888        (2) 9768        (3) 9944      (4) 9988

A can contains, a mixture of two liquids A and B in the ratio 7 : '5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A ' was contained by the can initially? '

1) 25

2) 21

3) 20

4) 10

20 men can complete the work in 40 days. When sbould 4 men leave so as to finish the work in 48 days?

(1) 4 days

(2) 8 days

(3) 6 days

(4) 10 days