You multiply the whole number by 2/5 or 0.4. Your product will be 40% of the number since 2/5, 0.4, and 40% are all the same thing/value.
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When a whole number is given- divide the percent given into the whole number and you will get the original number 39\40 should equal 97.5 great fun you should try it. Works every time.
To find the number, you can set up a proportion using the formula: (part/whole) = (percent/100). In this case, the part is 4000.00, the percent is 40, and the whole number is unknown. So, the equation would be (4000/x) = (40/100). Cross multiplying, you get 4000 = 40x. Dividing both sides by 40 gives you x = 100, which means that 4000.00 is 40 percent of 100.
30% of 40 is 12 which is a whole number, not a fraction.
u go say it is 40 u put 40 over 100 and ur answer is 40% :)
40% of a number= 40% * the number= 0.40 * the number= 0.40 of a number