An investor enters into a long position in NN futures contracts on an index, where each contract has a notional value of VV times the futures price F0F0. The initial margin is 20% of the notional value for NN contracts. There is no maintenance margin requirement. The margin account earns a continuously compounded interest rate of 10%. The futures contracts are marked-to-market weekly. Assume there are 52 weeks in a year. One week later, the futures price decreases by 15%. Calculate the percent change in the investor's margin account after one week.

Solomon chemical company makes three products, b7, k6, and x9, which are joint products from the same materials. in a standard batch of 320,000 pounds of raw materials, the company generates 70,000 pounds of b7, 150,000 pounds of k6, and 100,000 pounds of x9. a standard batch costs $3,840,000 to produce. the sales prices per pound are $10, $14, and $20 for b7, k6, and x9, respectively. (a) allocate the joint product cost among the three final products using weight as the allocation base. (b) allocate the joint product cost among the three final products using market value as the allocation base. (c) allocate the joint product cost among the three final products using weight as the allocation base.