kyle plans to invest 5000 part at 3 simple interest and the

kyle plans to invest $5000 part at 3% simple interest and the rest at 4% simple interest. what is the most that he can invest at 3% and still be guaranteed at least $170 in interest per year

Let x be the part at 3%.

And \'5000 - x\' be the part at 4%

Then, 0.03 x + 0.04 (5000 - x) = 170

That is, 3x + 4(5000 - x) = 17000

3x + 20000 - 4x = 17000

3x - 4x = 17000 - 20000

-x = -3000

x = 3000

So, he can invest $3000 most at 3% and still be guaranteed at least $170 in interest per year.

kyle plans to invest $5000 part at 3% simple interest and the rest at 4% simple interest. what is the most that he can invest at 3% and still be guaranteed at

kyle plans to invest 5000 part at 3 simple interest and the

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