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Becker Bikes manufactures tricycles. The company expects to sell 500 units in May and 630 units in June. Beginning and ending finished goods for May is expected to be 170 and 135 units, respectively. June's ending finished goods is expected to be 145 units. Each unit requires 3 wheels at a cost of $20 per wheel. Becker requires 20 percent of next month's material production needs on hand each month. July's production units is expected to be 600 units. Compute Becker's direct materials purchases budget with respect to wheels for May and June. May June Budgeted cost of wheels purchased