I need this done by Monday the 24th 2014
5 answers by real people  I’m stuck on a maths question plz help…. It’s if 120 marks is 60% what is full marks?

120 is 60/100
? = 100 / 100
Answer is 120 x 100 / 60 = 200

Just set up a proportion problem.
120 x
=
60% 40%
From here you cross multiply to get (120*40=(60*x) = 4800 = 60x
Then divide by 60 to get x on its own. So x would be 80. Then add your original amount of 120 to 80 to find the 100% (60%+40% = 100%–– 120+80=200)
So, your answer is 200.

You know 120 =60%
so 100% must be 120*100/60
In fact the numbers are so simple you can do it in your head.

10% would be 20 Marks so just imagine 10 x 20 marks and that be your answer