Me asap: due to inflation there were two demand increases. after the second, the price for the certain item became 6 times the original. what was the percent increase of the second if the first increase was 50%?

If the first increase was 50%, that means that the price between the first and the second increase is 150% of the original. And as you need 6 (which is 4*150%) times the original, the price was increased for 450%. So, the last peecent increase is