A worker is allowed 60 hours to complete the job on a guaranteed wage of Rs 10 per hour Under the Rowan Plan, he gets an hourly wage of Rs 12 per hour For the same saving in time, how much he will get under the Halsey Plan?

The correct answer is A. Rs. 720.

Under the Rowan Plan, the worker gets an hourly wage of Rs. 12 per hour for the first 60 hours, and then an hourly wage of Rs. 18 per hour for any time saved. So, for the same saving in time, the worker will get Rs. 600 + Rs. 120 = Rs. 720 under the Halsey Plan.

Here is a brief explanation of each option:

• Option A: Rs. 720. This is the correct answer.
• Option B: Rs. 540. This is the amount the worker would get under the Rowan Plan if he worked for the full 60 hours. However, since he saves time, he will get more than this amount.
• Option C: Rs. 600. This is the amount the worker would get under the Halsey Plan if he worked for the full 60 hours. However, since he saves time, he will get more than this amount.
• Option D: Rs. 900. This is the amount the worker would get under the Halsey Plan if he worked for 45 hours. However, since he saves time, he will get more than this amount.