Q 1812645539.     A trust hast Rs.`.30,000` that must be invested in two different types of bonds. The first bond pays `5%` interest per year and second bond pays `7%` interest per year. Using matrix multiplication, determine how to divide Rs.`30,000` among the two types of bond if the trust fund obtains an annual total interest of

(a) Rs. ` 1800`

(b) Rs. `2000`

NCERT Chapter Solution 3.2/19
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