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108. Rock Solid Bank and Trust (RSB&T) only offers checking accounts. Customers can write
checks and use a network of automated teller machines. RSB&T earns revenue by investing the
money deposited (subject to reserve requirements). Currently RSB&T averages 6% return annually
on its investments. In order to compete with larger banks, RSB&T pays depositors 1% on all
deposits. A recent study classified the operating costs of the bank into four activities. Data on
these activities are:
Required:
(a) Compute the operating profits of the RSB&T.
(b) Compute the profit of Customer A and Customer B, assuming that customer costs are based
only on deposits.
(c) Compute the profit of Customer A and Customer B, assuming that customer costs are
computed using the information in the activity-based costing analysis.