The following direct materials and direct labor data pertain to the operations of Laurel Company for the month of August. Actual labor rate Costs $14 per hour Actual materials price $120 per ton Standard labor rate $13.50 per hour Standard materials price $121 per ton Quantities Actual hours incurred and used 3,900 hours Actual quantity of materials purchased and used 2,000 tons Standard hours used 3,950 hours Standard quantity of materials used 1,980 tons (a) Compute the total, price, and quantity variances for materials and labor. Total materials variance $ Materials price variance $ Materials quantity variance $ Total labor variance $ Labor price variance $ Labor quantity variance $