Question

There are 30 buttons in a box.

12 of the buttons are black. The rest of the buttons are white.

(a) Write down the ratio of the number of black buttons to the number of white buttons. Give your ratio in its simplest form.

James takes some black buttons from the box.

The ratio of the number of black buttons in the box to the number of white buttons in the box is now 1 : 2

(b) How many black buttons did James take from the box?

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

a)2:3 b)6

Step-by-step explanation:

30-12= 18

12:18 is divisible by 6 so you get 2:3 in the simplest form

2+3= 5

30/5=6

1 lot is 6 so he took 6 buttons