Question

a man buys a plot of land at rupees 360
000 he sell one third of the plot at a loss of 20% again he sells two third of the plot left at a profit 25% at what price should he sell the remaining plot in the order get a profit of 10% on the whole

Answer 1

Trikonmiti tan15 °tan36 °tan45 °tan54 °tan75 °-1