how to find out airthmetic mean
in fig if st||rq ps=3&sr=4find the ratio of the are of triangle pst to ar of triangle pqr
A trader bought the number of articles Rs.900.Five articles were found damaged .He sold each of the remaining articles at Rs.2 more than what paid for it and got a profit of Rs.80 on the whole transaction .Find the number of articles he bought??