(a). Evaluate, without using mathematical tables or calculator,
(3.69 x 105) / (1.64 x 10-3), leaving your answer in the
standard form.
(b). A man invested N20,000 in bank A and N25,000 in bank B at the beginning of a year. Bank A pays simple interest at a rate
of y% per annum and B pays 1.5% per annum. If his total interest at the end of the year from the two banks was N4,600, find the value of y.