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192. 20% is 1/5th, so you can divide 960 by 5.....or....you can do it the slightly messier way of moving the decimal point 2 places to the left and multiply by 20. Or, you can even do a partial sums method to work with smaller numbers: (20% of 100)*9 + (20% of 60). There are really myriad ways to solve this.

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13y ago

What else can I help you with?