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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?
 one year ago
 one year ago
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?
 one year ago
 one year ago

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satellite73Best ResponseYou've already chosen the best response.3
i bet you can do this
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
I know we will make something equal to 2/3 and suppose the cards as x.
 one year ago

satellite73Best ResponseYou've already chosen the best response.3
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 \[\frac{15+x}{65+x}=\frac{2}{3}\]
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
@satellite73 is already helping, thanks.
 one year ago

ParthKohliBest ResponseYou've already chosen the best response.0
Okay. Sorry to interfere :)
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.0
I got my memory back! :D
 one year ago

satellite73Best ResponseYou've already chosen the best response.3
whew! you had me worried for a second
 one year ago
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