Design Architects, LLP, billed clients for 6,000 hours of design work for the month. Actual variable overhead costsfor the month were Rs. 315,000, and 6,250 hours were worked. At the beginning of the year, a variable overhead standard of Rs. 50 per design hour had been developed based on a budget of 5,000 design hours each month. Calculate Design Architects' variable overhead spending and efficiency variances for the month.