Question

[Hint: (x-9) = (59 - x)]
9. One-third of a number is smaller than its two-third by 7. Find the numb
0. Radha is 19 years younger than her cousin. After 5 years their​

Answer 1

Answer:

Solution

let the number be X

Then the equation is=

$\frac{2}{3}x - \frac{1}{3}x = 7$

$= > \: \frac{2x}{3} - \frac{x}{3} = 7$

$= > \: \frac{2x - x}{3} = 7$

$= > \: \frac{x}{3} = 7 \\ x = \: 3 \times 7 \\ x = \: \: 21$

The number is 21