Ashwini Jakhar

• Apr 3rd, 2006

 

4x-2y=480x+y=150then x 130 so 130 is correct answer

vkparthipan

• Jun 16th, 2006

 

lets take  x q correct

150-x q wrong

so x*4+(150-x)*2=480

solve and sub u can get

correct =130

meenakshi vishnoi

• Jul 30th, 2006

 

hi

the correct answer is B

130*4-20*2=480

jainbrijesh

 Profile Answers by jainbrijesh Questions by jainbrijesh

• Jun 16th, 2007

 

B. 130 is the right answer.

preethaselvakumar

 Profile Answers by preethaselvakumar 

• Aug 26th, 2009

 

x- no., correct answers
y- no., of wrong answers

4x-2y=480 (or) 2x-y=240---> 1
x+y=150 --->2

by using 1 and 2 we get x=130 (correct answers)

kanu15s02

 Profile Answers by kanu15s02 

• Aug 29th, 2009

 

B . 130
Total correct answers are 130

IRA

• Oct 10th, 2011

 

Let the no of correct answers be x
then no of wrong answer=150-x
According to given condition,

(x*4) - (150-x)2=480
=> 4x-300+2x=480
=> 6x=480+300
=> x=780/6
=> x=130

Prashant

• Feb 2nd, 2012

 

Let No. of correct ques. is X, then num of wrong que is (150-X)
so, (X * 4) - [(150-X) * 2] = 480

After solving the about eq. u wil get ans as 130 means 130 correct & 20 wrong answers

vishal verma

• Nov 8th, 2017

 

After solve i got 90 answer is correct

Total correct marks is 150*4 =600
student have 480 marks corrct
Now we will subtract total mark substractt student hv marks = 600 - 480 = 120 marks left
We can divide 120negative marks/2 wrong marks = 60
That is mean we got 60 wrong question
Now we can subtract total 150 - wrong 60 = 90 correct question