Mr. Karim invested part of Tk. $6400$ at $8\%$ and rest at $9\%$ for $2$ years; total interest Tk. $1092$. Money at $8\%

Question

Mr. Karim invested part of Tk. $6400$ at $8\%$ and rest at $9\%$ for $2$ years; total interest Tk. $1092$. Money at $8\%$ is—

Accepted Answer

Tk. $3000$

Answer

Tk. $3400$

Answer

Tk. $3200$

Answer

Tk. $4000$

Mr. Karim invested part of Tk. 640064006400 at 8%8\%8% and rest at 9%9\%9% for 222 years; total interest Tk. 109210921092. Money at 8%8\%8% is—