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Sagot :
I hope it is right
The total amount of investment is $30,000 and it was invested into two account.
Called "a" for the first account and "b" for the second account of the rest money. Therefore
a+b= 30,000 => a = 30,000 - b
The first account has paid with 5% interest and second paid with 9% ( anually), and finally she recieve the total of interest is 1,700. Therefore,
The sum of both interest must equal 1,700
(a x 5% ) + (b x 9%) = 1,700
0.05a + 0,09b = 1,700
a = 30,000 - b. (below)
0,05 x (30,000 - b) + 0,09b = 1,700
1,500 - 0,05b + 0,09b = 1,700
b = 5,000 then use it into ( a= 30,000 -b = 30,000-5,000 = 25,000)
So the first investment is 5,000 and second is 25,000
The total amount of investment is $30,000 and it was invested into two account.
Called "a" for the first account and "b" for the second account of the rest money. Therefore
a+b= 30,000 => a = 30,000 - b
The first account has paid with 5% interest and second paid with 9% ( anually), and finally she recieve the total of interest is 1,700. Therefore,
The sum of both interest must equal 1,700
(a x 5% ) + (b x 9%) = 1,700
0.05a + 0,09b = 1,700
a = 30,000 - b. (below)
0,05 x (30,000 - b) + 0,09b = 1,700
1,500 - 0,05b + 0,09b = 1,700
b = 5,000 then use it into ( a= 30,000 -b = 30,000-5,000 = 25,000)
So the first investment is 5,000 and second is 25,000
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