Sipalo Ltd manufacturer product X using three differnt materials namely,M$1,$M$2,$and M$3.$The standard cost and revenue per unit are as follows: Selling pricek$400,$ Direct material A $5$kg at k$25$ pre kg $=125$ Direct material B $3$kg at k$22$ per kg$=66$ Direct labour $3$hours at k$10$ per hour $=30$ Valuable overheads $3$ hours at k$7$ per hour$=21$ Standard contribution$=158$ The budgeted production and sales for the period in question were $10,000$ units.Thise mix of materials be veried and there the usage variance can subdivided into mix and yield variance.For the oeriod under review $,$the actual results were as follows: production and sales $9000$ units Sales revenue $4,455,000$ Direct material A $35000$kg $910,000$ Direct material B $50,000$ kg $1,050,000$ Direct labour $30,000$ hours $385,000$ Variable overheads $230,000$ The general market prices at the time of purchase for material A and material B were k$21$ per kg andk$19$ per kg respectively. There was no opening or closing inventories during the period. required calculate the following: Material M$1$ price Material M$2$ price Labour rate Labour efficiency Variable overheads expenditure variable overheads efficiency Sales price Sales volume contribution material mix Material yield Material M$1$ price p$[$aning Materia M$2$ price planing Explain why variances are analysed into planning and operational variance