Question

Bob invests 100 dollars in a fund that yields 15% simple interest monthly. If Bob invests the principal in the middle of January, which is the first month will he have more than $200 total?

Answer 1

HEY DEAR ...

Amount is going to be double. as it is simple interest so 15*6=90%
invested in the mid of jan so int for the month of jan is 7.5%
so by the end of july he will have 97.5% returns and in the month of august he will get 15% more 

so the answer is august

HOPE , IT HELPS .