Kingbird Corp. purchased 3,150 pounds of flour in preparation for making its biscuit mix. Every package of mix is expected to use 5 pounds of flour, with flour budgeted at $0.45 per pound. The production department used 2,910 pounds of the flour in producing 560 packages of biscuit mix. If the purchasing department paid $1,575.00 for the initial flour purchase, what was Kingbird's DM efficiency variance