MATH DOSE 7

1. If the average of n number is 36 and if we increase the 75% of number by 6 each and decrease the remaining number by 9 each find the new average. (Answer 38.25)

2. Three article bought at 200 each and sold one article at loss of 10% and overall he gain 20% on whole transition find the profit percent of next two article (Answer- 35%)

3. A can do 40% of work in 6 day and B can do 30% of work in 3 days if both started the work and 2 day later B left the work In how many days whole work will complete entirely.

4. Rahul decided to donate its 12% of his salary but at the day of donation he donate the sum 4800 which is only 80% of he decided to donate. Find the 27% of his salary.  (Answer-13500)  

5. The parallel side of trapezium is 20 cm and 10 cm and non-parallel side are equal  if the area of trapezium is 180cm² the find the measurement of non-parallel side. (Answer-13cm)