Ratio of the principal and the amount after 1 year is 10 : 12. Then the rate of interest per annum is :

Ratio of the principal and the amount after 1 year is 10 : 12. Then th

1.	Ratio of the principal and the amount after 1 year is 10 : 12. Then the rate of interest per annum is :
A.	12%
B.	16%
C.	18%
D.	20%
Answer» E.

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Ratio of the principal and the amount after 1 year is 10 : 12. Then the rate of interest per annum is :

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