In a factory, there are 39 workers who have been categorised into five groups (A, B, C, D, E) on the basis of the range of their

daily wages (in multiples of Rs100), It is ensured that the daily wage of no worker is an exact multiple of Rs100. The distribution is

presented through the given histogram.

If two Managers are engaged to supervise the workers, with daily wages ranging between Rs700 and Rs800, then what will be the

average daily wage (nearest to a Rs) of all members of staff of the factory?