Question

easy algebra question:

a student takes a quiz wherein for every 4 mistakes, he loses 1 point. Assuming the quiz is over 100 and 55 points is the passing, how many correct answers should he have? @ParthKohli ;D

Answer 1

"over 100"? he attempts all questions?

Answer 2

lol

Answer 3

yes he does

Answer 4

He should have all correct...

Answer 5

lol :P what is the minimum number of correct answers :PP

Answer 6

0, he can get 0 correct lol

Answer 7

lol just admit it if you cant answer it >:))

Answer 8

Can I assume the marks to be 100 marks?

Answer 9

marks?

Answer 10

If x are correct, then 100 - x are incorrect. Can you solve now?

Answer 11

Lol :D Parth :P "Can you solve?"

Answer 12

lol i know the answer :P and that's not how you do it parth

Answer 13

If lgba is having difficulties, then it is my duty to explain basic math to him. ;P

Answer 14

I'm not done yet.

Answer 15

this isnt basic math you know

Answer 16

it involves analysis

Answer 17

\(\Large \color{purple}{\rightarrow x + {x \over 4} > 55 }\)

Answer 18

I mean - x/4

Answer 19

@lgbasallote is this intended to be a question, or is it a challenge of some sort for Parth?

Answer 20

some sort

Answer 21

to everybody

Answer 22

how many correct answers should he have? in order to pass?

Answer 23

that's the question lol

Answer 24

\(\Large \color{purple}{\rightarrow {4x + 4 \over 4} > 55 }\)

\(\Large \color{purple}{\rightarrow 4x + 4>220 }\)

\(\Large \color{purple}{\rightarrow 4x > 216 }\)

\(\Large \color{purple}{\rightarrow x >54 }\)

Answer 25

lol wrong =))

Answer 26

ah ok :)) so what should be the minimum score in order to pass?

Answer 27

Wait yes..

Answer 28

55 is the passing score

Answer 29

Wrong! it's not one-fourth for every wrong answer - rather - one negative for every four. SO basically if you answer 10 wrong, you lose just 2

Answer 30

Ohhh

Answer 31

if you answer 8 wrong you lose 2*

Answer 32

lgba is 96 now.

Answer 33

No you answer 10, then also you lose 2.

Answer 34

hmm what do you know i am

Answer 35

It's a step-up function :P

Answer 36

you win this round =_=

Answer 37

@lgbasallote , is the answer 64?

Answer 38

can i answer now?

Answer 39

seems like it...can you post a formula?

Answer 40

shh @dumbcow let them do it first :S

Answer 41

yeah, if x is the number of correct answers,
x-|(100-x)/4|=55

Answer 42

wait question...are there 100 possible points? or 100 total questions?

Answer 43

100 total questionss

Answer 44

oh nevermind then P

Answer 45

What the heck!

Answer 46

All this time I've been thinking 'points'

Answer 47

lol :p excuses

Answer 48

@lgbasallote , am i correct?

Answer 49

no

Answer 50

not an excuse.

Answer 51

But, really, I dunno how to figure this out lol

Answer 52

yes I agree with arnab09, you should answer atleast 64 correct answers in order to pass. because if you have 64 correct answers, you'll have 36 wrong answers and that will give you 9 point deduction so that you'll get score of 55 which is the passing score

Answer 53

Greater than 64*

Answer 54

greater thanor equal to 64

Answer 55

55 is passing, so greater than or equal to 64

Answer 56

that was fun

Answer 57

minimum number of questions, answer is 64

Answer 58

haha wow i totally misunderstood the question :0
good job @lgbasallote

Answer 59

linear programming
\[x+y \le100\]
\[x-y/4\ge55\]
then
\[4x-y \ge220\]
\[x+4x-220=100\]
\[5x=320\]
\[x=64\]