Answer:
t = 3.69 ≈ 3. 7 years
Step-by-step explanation:
Given :
P = 10,000
r = 5%= 0.05
A = 12,000
n = 2 ( because it is compounded semi - annually )
the answer is (R-7)÷5
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9
5x+3x-3= 8x+16-10
5x+3x-8x=16-10+3
8x-8x=9
= 9