Question 1060931
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An increase of x% multiplies the value by a factor of (100+x)%.  For example the first increase in this problem multiplies the value by (100+50)% = 150% = 1.5 or 3/2.<br>
We need the second increase to make the value 6 times the original:
(1.5)(x) = 6
x = 4<br>
The increase is by a factor of 4, or 400%.  That 400% is 100% plus the amount of the second increase, so the second increase was by 400-100 = 300%.<br>