a man prpare the technical document it takes 2 hours for half an hour presentation and technical preparation. its screening takes 30 more minuts to prepare with the other guy.for to present a 7 half an hours how much time it will take  Choose the most appropriate option:
A) 37 hours  B) 35 hours  C) 37 1/2 hours  D) 33 hours  E) 34 hours
here first 2 hours to prepare a technical document and half-an-hour to screen it ..so total 2 1/2 hour work is need to 1/2 hour presentation....   For 7 1/2 hours presentation...   1/2 hour presentation--------------&gt;&gt;2 1/2 hour work done   7 1/2 hr presentation --------------&gt; x hours work done   just do cross multiplication u will get x value i.e. required amount of time   since 7 1/2 hours contains 15 half-an-hours ...15* 2 1/2===== 30+7.5===total 37 1/2 hours   ANSWER:37 1/2 hours
<result>C</result>
a man prpare the technical document it takes 2 hours for half an hour presentation and technical preparation. its screening takes 30 more minuts to prepare with the other guy.for to present a 7 half an hours how much time it will take