Question

A BAG CONTAINS 12 BALLS OUT OF WHICH X ARE BLACK BALLS. FIND THE PROBABILITY OF GETTING A BLACK BALL IF ONE BALL IS DRAWN . IF 6 MORE BLACK BALLS ARE ADDED IN THE BAG THE PROBABILITY OF GETTING A BLACK BALL WILL BE DOUBLE .. FIND X
Correct Answer will be mark as a brainliest ​

Answer 1

Answer:

1

$1x + 6x = 7x \\ \\ ||$

Answer 2

Answer:

total ball = 12

Black ball = x

probability of 1 minus from black ball = x - 1

probability of black ball doubled = x × 2 -1

= 2x - 1

2x - 1