Question

A bag contains 20 discs of equal size of which 12 are green , x are black and rest are white .​

Answer 1

Answer:

bag contains 20 discs

12 are green

x are black and rest of all are white

green discs +black discs + white discs=20

12+x+x=20. {let white discs also be x}

12+2x =20.

2x=20-12

2x=8

x=8\2

x=4

then black discs=4 and white discs=4.

Answer 2

Answer: To (a)

Step-by-step explanation:

20 - 12 = 8

This means, x must be under eight.

5/20 when simplified gives you 1/4

So Therefore X = 5