0.84
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21/50 or 0.42
What is 42% of 50:= 42% * 50= 0.42 * 50= 21
42% = .42
21 just half it
A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. So the required decimal representation is -42.