Question

9. Machine operator completes a job in 85% of the estimates time. The estimated time is 10.8 hours. How many hours does the job actually take? a. 9.18 b. 9.55 c. 9.79 d. 10.11 10. How many pounds of manganese bronze can be made with 876.0 pounds of copper if the manganese bronze is to contain 56% copper by weight? Round the answer to the nearest whole pound a. 1,428 b. 1,470 c. 1,529 d. 1,564 11. An iron casting shrinks 1/4 inch per foot. What is the percentage shrinkage? Round the answer to the nearest whole percent. a. 1 b. 2 c. 3 d. 4 12. Material cost for a job is $1.540. The cost is 18.9% of the total cost. What is the total cost? Round the answer to the nearest dollar. a. $7,884 b. $8,008 c. 88.148 d. 8,286

i need the answers to all four of the problems.

Answer 1