Actual labor rate IS pe Actual materials price $130 per ton $12.50 per hour Standard labor rate Standard materials price $133 per ton Quantities Actual hours incurred and used 4,000 hours Actual quantity of materials purchased and used 1,900 tons 4,080 hours Standard hours used Standard quantity of materials used 1,880 tons (a) Compute the total, price, and quantity variances for materials and labor. $ Total materials variance Favorable $ Materials price variance Favorable $ Materials quantity variance Unfavorable $ Total labor variance Unfavorable $ Labor price variance Unfavorable $ Labor quantity variance Favorable