Question

65% of a number is 21 less than four-fifth of that number. What is that number?

Answer 1

Answer:

the number is 140

Step-by-step explanation:

let the no. be x

acc. to sum

65%of x = 4x/5-21

$\frac{65}{100}x = \frac{4}{5}x - 21$

$\frac{4}{5}x - \frac{13}{20}x = 21$

$\frac{16 - 13}{20}x = 21$

$\frac{3}{20}x = 21$

$x = \frac{21 \times 20}{3}$

therefore x = 140