Simple (?) Maths Problem - Help Please

[VectraMan]

70 = 0.4*62.85+0.6x
(70-25.14)/0.6=x
x=74.76

It's actually 74.7666666 recurring, but if you round it down to 74.76 it'll come out as not quite 70% and he won't pass. So it needs to be 74.77.

Moron.

 

[mudskipper]

You don't need to know, you just have to find X such that 62.85 * 0.4 + X * 0.6 equals 70

If the papers have the same total marks. They often don't.

Often there's a baseline requirement too - i.e. you have to 'pass' both papers, or achieve x% in both papers to get a certain grade regardless of the average.

 

[Platypus]

Are you trying to work out if your kid should have got a first rather than a 2:1? Because 60:40 was the weighting of years 3 & 2, and 70% was the requirement for a 1st, on my degree

Nice one Sherlock!

My kid is trying to work out what marks she needs in her 3rd year

So 75 would scrape a first, nevermind all this point blah recurring stuff

 

[OwlHoot]

If the papers have the same total marks. They often don't.

I suppose we have to assume that is taken into account by the 40/60% weighting.

Often there's a baseline requirement too - i.e. you have to 'pass' both papers, or achieve x% in both papers to get a certain grade regardless of the average.

Aaargh - scope creep!

(not saying you are the creep - just the requirements )

 

[Bunk]

It's actually 74.7666666 recurring, but if you round it down to 74.76 it'll come out as not quite 70% and he won't pass. So it needs to be 74.77.

Moron.

Hold on, is 74.76... the same as 74.77?

 

[Bunk]

I suppose we have to assume that is taken into account by the 40/60% weighting.



Aaargh - scope creep!

(not saying you are the creep - just the requirements )

This is what's commonly known as "doing a Suity"

 

[jamesbrown]

It's actually 74.7666666 recurring, but if you round it down to 74.76 it'll come out as not quite 70% and he won't pass. So it needs to be 74.77.

Moron.

Shut up, you fecking feck.

 

[d000hg]

Nice one Sherlock!

My kid is trying to work out what marks she needs in her 3rd year

So 75 would scrape a first, nevermind all this point blah recurring stuff

Hope she isn't doing maths or science then

She would need to target 75% although outside science I think that's rather difficult. However I think if you're on the boundary they can be lenient if your final (more important) year results are a clear first.