Question

5. 65% of a number is 21 less than 4/5th of that number. What is the number?

Answer 1

Answer:

140

Step by step explanation:

Let the number be x

According to question,

=>65% of x=4/5*x - 21

=>13/20*x=4/5*x -21

=>4/5*x - 13/20*x=21

=>3/20*x=21

=>3x=21*20

=>3x=420

=>x=420/3

=>x=140.