Thirty percent of a number is 21 less than four fifth of that number. What is the number ? Choices
A) 42  B) 40  C) 230  D) 130  E) 125
Let the number be x.   Then, 4*x/5 â€“30% of x) = 21   4x/5 â€“30x/100 = 21   x = 42.   42nswer 42.
<result>A</result>
Thirty percent of a number is 21 less than four fifth of that number. What is the number ?