Issue in explanation to a Quant Problem on Gregmat

[user4672]

The below is a question in the quant problem from the Gregmat website under practice section.

In the video solution, it is stated that there will be no interest earned until the first instance of compounding is met. In other words, Charlie won’t make any interest till January 1st and Bob won’t make any interest till October 1st. Is this valid? Will the interest not be made even if a day is lapsed?

[Leaderboard]

Will the interest not be made even if a day is lapsed?

No. Well this depends on the bank actually; the point here more is that interest is ordinarily credited every 3 and 6 months in this case respectively.