The probability of drawing a peppermint candy out of a jar of 25 candies is 1/5. How many more peppermint candies should be added to the jar in order to increase the probability of drawing a peppermint candy to 1/3?
(A) 5
(B) 10
(C) 15
(D) 30
2 answers
It's it A?
If the probability of drawing is 1/5th out of 25 candies, then 25 x 1/5=5 peppermint candies in the jar. Let n be the number of candies to be added. Then:
1/3(25+n)=5+n
25/3+n/3=5+n
25+n=15+3n
10=2n
n=5
5 more peppermint candies need to be added.
☺☺☺☺
1/3(25+n)=5+n
25/3+n/3=5+n
25+n=15+3n
10=2n
n=5
5 more peppermint candies need to be added.
☺☺☺☺
1 answer