please help i need 23 & 24 not 22

The following information is for #22 - # 25. A company is designing a serial layout for a new product. It plans to use this production line twelve hours per day in order to meet projected demand of 900 units per day. The company uses the highest positional weight rule for line balancing. The tasks necessary to produce this product are the following: Task Predecessor Time (Seconds) a None 48 b a None b,c 12 x 6060 / 900. =48 d f e 22. What is the desired cycle time (in seconds)? a. 60 b. 84 c. $7 d. 50 43,200 x 900 e 48 23. What is the minimum number of workstations needed? a. 3 b. 4 c. 4.6 d. 1 e. 2 24. What would be the efficiency of this line with the minimum number of workstations? a. 68% b. 86% c. 14% d. 90% c. 88% 25. If the line is balanced, what is the second task performed at the second workstation, assuming the min number of workstations is used? a. f b. e c. b d. c e. d d e 35 13 10 35 24 12x3600