To find 40 percent of a number, multiply the number by 0.4. In this instance, 0.4 x 30 = 12. Therefore, 40 percent of 30 is equal to 12.
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30
The amount after the discount is $18.00
30% of 741 = 741*30/100 = 222.30 dollars.
30% of 40% = 12%. 20% of anything is a fifth so 12% x 5 = 60%