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Mathematics 18 Online
OpenStudy (selena2345):

A student needs 70% to pass a mathematical examination containing 50 questions. How many questions must she get right ?

terenzreignz (terenzreignz):

Well, 70% of 50 :)

OpenStudy (selena2345):

i don't know how to do that

OpenStudy (anonymous):

15 questions

terenzreignz (terenzreignz):

Can you multiply fractions?

OpenStudy (anonymous):

5% each eqestion can i get a badge :) ?

OpenStudy (anonymous):

thxs

OpenStudy (selena2345):

can you show how did it uchiramadara?

terenzreignz (terenzreignz):

No, you may not, @UchihaMadara 5% each question, and 50 questions? That makes 250% total !

OpenStudy (anonymous):

...... my bad?

OpenStudy (anonymous):

im srry '_'

terenzreignz (terenzreignz):

Unforgivable... but what can you expect from an Uchiha... :/ @Selena2345 Can you convert 70% into a fraction?

OpenStudy (selena2345):

70/100

OpenStudy (anonymous):

70 over a 100/ 7/10

terenzreignz (terenzreignz):

Yep. Now just multiply that fraction to 50. What do you get?

OpenStudy (anonymous):

Student should get 70% of 50 i.e 70/100 x 50 = 35 questions to pass the exam

OpenStudy (anonymous):

7/10 70/ 100***

OpenStudy (anonymous):

dont under estimate the Uchiha terenzreignz

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