exam Maths Puzzle Numerical Ability

Colin invested $32,000, part at 8% and part at 12%. If the total interest at the end of the year is $3,160, how much did he invest at each rate?

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write the point-slope form of a line where m is the slope and (x1,y1) is a point on the line. Sarah needs to borrow $1500 for her school tutition. She borrows the money on a six monthe short term note that charges simple interest. After 6 months, she owes $90.00 in interest. What is the simple interest rate being charged on this note?