According to the standard, what cost for a plastic should have been incurred to make 35,000 helmets?

Exercise 10-1
Direct materials variance.
Bandar Industries of Malaysia manufactures sporting equipment. One of the company’s products, a football helmet for the North American Market, requires a special plastic. During the quarter ending June 30, the company manufactured 35,000 helmets, using 22,500 kilograms of plastic. The plastic cost the company $171,000. According to the standard cost card, each helmet should require 0.6 kilograms of plastic, at a cost of $8 per kilogram.
Required:
1. According to the standard, what cost for a plastic should have been incurred to make 35,000 helmets? How much greater or less is this that the cost was incurred?
2. Break down the difference computed in (1) above into a materials price variance and a material quantity variance