Supriya has two employees in her boutique who are paid according to the chart below :
Employee. Hourly pay. Daily Bonus.
Employee 1. Rs.40 per hour. Rs. 60
Employee 2. Rs.30 per hour. Rs. 100
Supriya wishes both employees should end each day working for the same no. Of hours and also to get the same amount of money. What is the minimum no. Of hours that they shall work each day to fulfil Supriya's wish ?