persentages and test scores

[KT84]

i haven't a clue where to put this put im hoping someone can help me. My brain is a little rusty and im having trouble working out how to figure it out. i have 3 results of coursework i have done. these three make up one module. For an assignment that is 30% of the module i got a mark of 62 (a B) for another piece of work thats 30% i got 57 (a C+) and for the final assignment that is worth 40% of the module i got 67 (a B+). How do i work out what my overall mark for the module is?

[THECORBYLOON]

Percentages can be expressed as decimals so that 30% can be written as 0.3 and 40% as 0.4.

For the assignments that works out as

(1) 62 x 0.3 or 18.6

(2) 57 x 0.3 or 17.1

(3) 67 x 0.4 or 26.8

Adding then gives a total of 62.9, or 63 rounded up.

That would seem to mean an overall B grade (as it is close to the 62 which is a B.) That can be checked, since you got one grade above a B, one grade below a B and a B itsel so the average of those would be a B too.

[Ethel]

I expect it will be an average of the three, which is 62% - a B.

[THECORBYLOON]

Soz the adding up should have been 62.5 rounded up to 63. ( I have a sore throat, a headache and I'm choked up so I'm allowed a mistake when I'm at Death's door)

[KT84]

thanks guys
tcl thats exactly what i was trying to do, at first i did it your way ethel and i realised because not all parts were equal that wasnt quite right, yes i think i got a B over all in the end tho.

[Whickerman]

Crikey - hope it wasn't a maths course!

(only kidding - well done!)