Sixty-five percent of a number is 21 less than four-fifth of that number. What is the number ?
Sixty-five percent of a number is 21 less than four-fifth of that number. What is the number ? Correct Answer 140
Let, the number x According to question, x × 65 /100 + 21 = 4x/5 65x/100 - 4x/5 = - 21 ( 65x - 80x)/100 = - 21 - 15x = - 2100 x = 140