Question

half of a certain number added to its one third gives 15. Find the number

Answer 1

no is X
1/2x+1/3x=15
(3+2/6)x=15
5/6x=15
x=15*6/5
x=3*6=18.

Answer 2

Hi ,

Let the number = x

Half of the number = x/2

One third of the number = x/3

According to the problem given,

x /2 + x/3 = 15

( 3x + 2x ) /6 = 15

5x/6 = 15

x = 15 × ( 6/5 )

x = 3 × 6

x = 18

Therefore ,

Required number = x = 18

I hope this helps you.

:)