Question

In a box of tickets,there are 50 blue tickets and 15 red tickets.after a certain number of red tickets are added to the box,the probability of randomly choosing a red ticket is 2/3.how many red tickets were added to the box?

Answer 1

@satellite73

Answer 2

i bet you can do this

Answer 3

I forgot.

Answer 4

I know we will make something equal to 2/3 and suppose the cards as x.

Answer 5

add \(x\) red ones so you have a total of \(x+15\) red and \(65+x\) in the box
ratio of red to total is
\[\frac{15+x}{65+x}=\frac{2}{3}\]

Answer 6

@satellite73 is already helping, thanks.

Answer 7

Okay. Sorry to interfere :)

Answer 8

I got my memory back! :D

Answer 9

number/TOTAL !!

Answer 10

whew! you had me worried for a second

Answer 11

;D