If a cistern is 3 metre long, 2 metre wide and 1 metre deep, its capacity in litres is
 

(1) 6

(2) 600

(3) 6000 .

(4) 60000

Ranjit lent to Sujit Rs. 600 far 2 years and Rs. 150 to Alak far 4 years and received fram bath Rs. 90 as total interest.Interest being simple, the rate ,of interest charged per annum was  -

1)  12%

2)  6%

3)  5%

4)  2%