R Ltd is engaged in producing a 'standard mix' using 60 kgs of chemical X and 40 kgs of chemical y. The standard loss of production is 30%. The standard price of X is Rs 5 per kg and of Y is Rs 10 Kgs The actual mixture and yield were as follows X 80 Kgs @ Rs 4.50 per Kg and Y 70 Kgs @ Rs 8.00 per kg Actual Yield 115 Kgs Calculate Material Variances