Two types of rice costing Rs.135 per kg and Rs.125 per kg are mixed in the ratio 2:3. In what ratio third type of rice costing Rs 75/kg should be mixed to sold the mixture at the rate of Rs.105/kg​

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio