Answer:
I = $ 1,937.50
Step-by-step explanation:
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this number is rational because you can write it as a fraction 19/100
2
∵a+1,2a+1,4a-1 are in A.P.
2(2a+1)=a+1+4a-1
4a+2=5a
5a-4a=2
a=2