The stitching work done by boys, girls and adults is in the ratio of 5 : 5 : 3. There are 40 boys, 35 girls and 25 adults in a stitching work. Their weekly wages are divided in the ratio of work done by boys, girls and adults. The total wages of 25 adults is Rs. 150. Find the average weekly wages of 30 boys, 30 girls and 20 adults.