We know that 50% of the number is 150 so we can assume the number is 300(if its 50% just double that number). Next we use the equation 0.80 x 300 which gives us the answer 240.
The value of x will be obtained as follows: 1331x^4-216=0 1331x^4=216 divide through by 1331 x^4=216/1331 x=(216/1331)^(1/4) x=(6^3/11^3)^(1/4) x=(6/11)^(3/4)
