Question 803878


If there are {{{25}}} question on a test, and you got all right, then you have {{{100}}} percent and 

if you answered correctly {{{x}}} question on a test and you got {{{88}}} percent, then you have proportion:  

{{{25:100=x:88}}}.....solve for {{{x}}}

{{{25*88=100x }}}

{{{25*88/100=x }}}

{{{cross(25)*88/cross(100)4=x }}}

{{{ 88/ 4=x }}}

{{{ 22=x }}}......you got {{{22}}} questions right 


or, you can do it this way:

if you have {{{25}}} questions, one right answer gives you {{{100/25=4}}} percent

if you got {{{88}}} percent, than  you got {{{88/4=22}}} questions right