Question

There are some black and white buttons in a container.

7/10 of the buttons are black.
The difference between the number of black and white buttons is 24.
How many buttons are there in the container?

Answer 1

60 buttons.

Step-by-step explanation

Let the number of buttons in the container be x.

Then the number of buttons that are black are:

`(7)/(10) x`

The number of buttons that are white

`(3)/(10) x`

The difference between the white and the black buttons

`(4x)/(10) = 24`

Solve for x.

`4x = 240`

`x = (240)/(4)`

`x = 60`

Hence there are 60 buttons in the container.