if a person in one subject got 20 out of 50, in second subhect got 30 out of 60 and in another subject x out of 40. overal percentage is 60 then value of x?

Option
a) 36
b) 30
c)38
d) 32

• For 60% out of total 150 marks, one should get total 90 marks.
  so in third subject he got 90-20-30 = 40 marks
  so none of these.
• 11 years agoHelpfull: Yes(33) No(8)
• (20+30+x)/(50+60+40) *100=60
  or (50+x)/150 *100=60
  or 50+x=90
  or x=40
  none
• 11 years agoHelpfull: Yes(28) No(7)
• first student per.=40
  second student per.=50
  third student per. = x
  total per. = 60
  so
  (40+50+x)/3=60
  x=90
  so 36 will satisfy
  ans =36
  
• 11 years agoHelpfull: Yes(18) No(12)
• person got 20 out of 50 means 40%,second got 30 out of 60 means 50%,avg is 60% means (40+50+x)/3 which will b equal to 90% . 90% of 40 is 36
• 11 years agoHelpfull: Yes(12) No(4)
• Calcutating in First subject% : 20/50*100= 40
  Second: 30/60*100= 50
  Overall percentage = 90 ( of two subject)
  To get 60& it should be 180 in total
  So, Third average = 36*100/40= 90
  Total= 90+90=180
  Average = 180/3 = 60%
  
  Answer= 36
• 11 years agoHelpfull: Yes(7) No(1)
• in first subject he got 20 out of 50 i.e. 40%
  in second he got 30 out of 60 i.e. 50%
  in 3rd he got x out of 40 i.e. 5x/2%
  to calculate average 60% - 40 + 50 + 5x/2 = 180
  so ans is 36
• 11 years agoHelpfull: Yes(6) No(0)
• student get totel 60 % marks
  in first subject=20*100/50=40%
  in second sub.=30*100/60=50%
  avg is 60 %
  40+50+y=3*60
  y=90%
  
  90% of 40=36 ans
  
• 11 years agoHelpfull: Yes(6) No(0)
• Total marks= 50+60+40= 150.
  Percentage is 60..
  (x/150)*100=60
  by solving x=90 these are total marks obtained by a person in three subjects..
  20+30+x=90; x=40 marks...
  
• 11 years agoHelpfull: Yes(3) No(5)
• 90% require to make overall 60%.so 36 marks r needed
• 11 years agoHelpfull: Yes(3) No(1)
• ((100)/(150))*(50+x)=60
  x=40
• 11 years agoHelpfull: Yes(1) No(4)
• total=50+60+40=150
  scored=20+30+x=50+x
  Percentage=scored/total*100
  60=(50+x)/150*100
  (60*150)/100=50+x
  90=50+x
  x=40
• 11 years agoHelpfull: Yes(1) No(3)
• 20/50 is 40%
  30/60 is 50%
  both % values get the 45% in total
  if take 36 it will be 90% of 40.
  so the answer is 36
• 11 years agoHelpfull: Yes(1) No(0)
• 20 OUT OF 50 =40%
  30 OUT OF 60 =50%
  X OUT OF 40 =?
  
  SO, (40+50+X)/3=60
  (90+X)/3=60
  X=90
  SO, X OUT OF 40 =90%
  90% OF 40 IS 36 (ANS)
• 11 years agoHelpfull: Yes(1) No(0)
• 38.closest to 40,the real answer.
• 11 years agoHelpfull: Yes(1) No(2)
• to calculate % we convert every base in 100
  thus 20/50 so 40/100
  now 30/60 ..here we try to make base 100 , so to make 60 as 100 we have to multiply it by (5/3) ,and we to multiple this in numerator too
  so 30/60 become 50/100
  
  similarly to make x/40 base 100 multiply (5/2) in num and den which make
  x/40 as (5x/2)/100
  
  now to calculate % it will be (90+(5x/2))/3=60
  thus x=36;
• 10 years agoHelpfull: Yes(1) No(0)
• {(20+30+x)/150}*100=60
  50+x={60*150)/100
  x=30
• 11 years agoHelpfull: Yes(0) No(6)
• According to the question we can form an equation as, ((50+x)/150)*100 = 60
  from this, x = ((60*150)/100)-50 which gives solution as 40.
• 11 years agoHelpfull: Yes(0) No(1)
• total percentage=60%
  (40+50+X)/3=60
  so x=90
  noew 90% of 40=36
• 11 years agoHelpfull: Yes(0) No(0)
• the exact answer is 36
  bcoz "none of this" option is not available.
• 11 years agoHelpfull: Yes(0) No(1)
• (20+30+x)/(150)=0.6
  x=40
• 11 years agoHelpfull: Yes(0) No(0)
• ans:40
  (60/100)*150=20+30+x
  90=50+x
  x=40
• 11 years agoHelpfull: Yes(0) No(0)
• ==> ((20/30)+(30/60)+(x/40))/3 = 60/100
  ==> x=36
• 11 years agoHelpfull: Yes(0) No(0)
• the above options given are wrong the answer should be 40
  (20+30+40)/150=90/150==3/5,,,,,,,and the percentage is (3/5)*100=60
  so the x value is 40
• 11 years agoHelpfull: Yes(0) No(0)
• ((20+30+x)*100/150)=60
  x=40
  
• 10 years agoHelpfull: Yes(0) No(0)
• 20 out of 50 is 40%
  30 out of 60 is 50%
  and it want our all 60% so it should
  (40+50+x)/3 = 60
  90+x=180
  x=90%
  90% of 40 is 36
  ans may be 36 plz check out
  
• 10 years agoHelpfull: Yes(0) No(1)
• 36 is the right answer
  
• 10 years agoHelpfull: Yes(0) No(0)
• marks=40
  here
  20+30+x=50+x
  
  (50+x/150)*100=60
  x=90-50=40
• 10 years agoHelpfull: Yes(0) No(1)
• since total marks of three subject is =50+60+40=150
  he obtained 60% overall marks of three subject
  60% of total marks is 150*60%=90
  he obtained 20+30+X=90
  =>X=40.
  so value of X is 40
  
• 10 years agoHelpfull: Yes(0) No(1)