exam Maths Puzzle Numerical Ability

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exam Other Question

Janet invested $13,000, part at 13% and part at 6%. If the total interest at the end of the year is $1,200, how much did she invest at each rate? a roof rises 1 feet vertically and 11.5 feet horizontally. What is the grade of the roof?

The grade of the roof is 1/11.5=.087 OR 9%
(round to the nearest percent as needed)