A box contains (π₯+1) red marbles, (2π₯+4) yellow marbles, and (4π₯β6) green marbles
(i)
Find an expression, in terms of π₯, for the total number of marbles in the box.
(ii)
A marble is drawn at random from the box. Write down an expression, in terms of π₯, for the probability that the marble is red.
(iii)
Given that probability in part (ii) is 1/5, find the value of π₯.
(i)
The total number of marbles in the box:
(ii)
The probability that the drawn marble is red:
(iii)
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