A bank loaned out 10,000​, part of it at the rate of %7% per year and the rest at %17% per year. If the interest received in one year totaled 1,000 how much7%

Question

I just need the answer to this question. i cant figure it out 

Answer 1

X is the amount at 17%

Y is the amount at 7%

 

 

17% = 0.17 and 7% = 0.07

 

0.17X + 0.07Y = 1000

 

X + Y = 10000 --->  Y = 10000 - x

 

0.17X + 0.07( 10000 - x) = 1000

 

0.17X + 700 - 0.07X = 1000

 

0.10X + 700 = 1000

 

0.10X = 300

 

10X = 30000

 

X = 3000

 

Y = 7000