Answer:
240
Explanation:
50%*x=150
0.5x=150
x= 300
30%*x=90
0.3x= 90
80%*300=
0.8*300= 240
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.
Hope I helped
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