The following unemployment tax rate schedule is in effect for the calendar year 2020 in State A, which uses the reserve-ratio formula in determining employer contributions:

Reserve Ratio ........................................ Contribution Rate
0.0% or more, but less than 1.0%............................... 6.7%
1.0% or more, but less than 1.2%............................... 6.4%
1.2% or more, but less than 1.4%............................... 6.1%
1.4% or more, but less than 1.6%............................... 5.8%
1.6% or more, but less than 1.8%............................... 5.5%
1.8% or more, but less than 2.0%............................... 5.2%
2.0% or more, but less than 2.2%............................... 4.9%
2.2% or more, but less than 2.4%............................... 4.6%
2.4% or more, but less than 2.6%............................... 4.3%
2.6% or more, but less than 2.8%............................... 4.0%
2.8% or more, but less than 3.0%............................... 3.7%
3.0% or more, but less than 3.2%............................... 3.4%
3.2% or more................................................................. 3.1%

Conrad Company, which is located in State A, had an average annual payroll of $1,150,000 for the three 12-month periods ending on June 30, 2019 (the computation date for the tax year 2020). As of June 30, 2019 the total contributions that had been made to Conrad Company’s reserve account, in excess of the benefits charged, amounted to $21,560. Compute:

a. Conrad Company’s reserve ratio for 2019....................................................... .         %

b. 2020 contribution rate for the company.......................................................... .         %

c. Smallest contribution that the company can make in order to reduce its tax
rate if State A permits voluntary contributions................................................. $

d. Tax savings realized by the company, taking into consideration the
voluntary contribution made in (c) if the taxable payroll in 2020 is
$1,295,000........................................................................................................ $