Math Is Fun Forum

notsobright

Member

Registered: 2008-10-19

Posts: 3

A SUPER TOUGH ONE FOR ONLY THE FAINT AT HEART :o)

Okay...
My exam was 150 Questions

There are 8 topics being covered:
Topic one - there are 28 questions out 150
I GOT 71%
Topic two - there are 14 questions out of 150
I GOT 93%
Topic three - there are 27 questions out of 150
I GOT 67%
Topic four - there are 4 questions out of 150
I GOT 25%
Topic five - there are 39 questions out of 150
I GOT 74%
Topic six - there are 8 questions out of 150
I GOT 38%
Topic seven - there are 9 questions out of 150
I GOT 56%
Topic eight - there are 21 questions out of 150
I GOT 57%

HELP!!!
HOW MANY QUESTIONS OUT OF 150 DID I GET RIGHT IN EACH OF THESE TOPICS?

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: A SUPER TOUGH ONE FOR ONLY THE FAINT AT HEART :o)

You can work out the amounts you got right for each individual topic, and then you add them all together.

In each case, divide your percentage by 100, multiply by the amount of questions there were, and then round to the nearest whole number.

For topic one, you got 71% with 28 questions, so you got 0.71 * 28 = 20 questions right.
For topic two, you got 0.93 * 14 = 13 right.

etc.

---

Why did the vector cross the road?
It wanted to be normal.

notsobright

Member

Registered: 2008-10-19

Posts: 3

Re: A SUPER TOUGH ONE FOR ONLY THE FAINT AT HEART :o)

Thank you very much - I get it!
)