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Mathematics 24 Online
OpenStudy (anonymous):

Elena buys several shares of stock at $28 per share and sells them at $24.50 per share. What is the percent of decrease in the price of the stock

OpenStudy (anonymous):

do you know how to take percentage?

OpenStudy (anonymous):

no @Mashy But im learning

OpenStudy (anonymous):

ok.. percentage is basically out of 100 for example. if i say i scored 9 of 10.. then if i wanna know what my percentage score is.. then all i have to do is how much would i score out of 100.. and taht comes out to 90.. so 90 percentage.. is that clear?

OpenStudy (anonymous):

yea

OpenStudy (anonymous):

if i tell you.. i scored 4 out of 5.. whats my percentage score?

OpenStudy (anonymous):

0.2?

OpenStudy (anonymous):

idk

OpenStudy (anonymous):

you do the cross multiplication 4 --- 5 ? --- 100 4 X 100 / 5.. how much does that yeild?

OpenStudy (anonymous):

80?

OpenStudy (anonymous):

@Mashy

OpenStudy (anonymous):

perfect.. so thats how you do cross multiplication.. let me give you one more i i say.. i scored 50% percent.. how much did i score out of 25

OpenStudy (anonymous):

ohh i see where you going okay now 24.5*100/28 right

OpenStudy (anonymous):

no.. the question is .. what is the percentage DECREASE??.. so first find the decrease.. then find the percentage decrease!

OpenStudy (anonymous):

ohh okay

OpenStudy (anonymous):

idk

OpenStudy (anonymous):

tell me how much is the decrease?

OpenStudy (anonymous):

The difference is $3.50. The percent decrease is therefore the difference divided by the original price: (3.50/28) x 100% = 12.5%???

OpenStudy (anonymous):

oh.. i love you :D.. correct!!

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

no probs!

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