The rates of simple interest in two banks M and N are in the ratio of 4 : 7. A person wants to deposit his savings in: the two banks in sucha'way that he receives equal half yearly interests from the two' banks. He should deposit the savings in the banks M and N in the ratio (1) 2 : 7 (2) 7 : 2 (3) 4 : 7 (4) 7 : 4
