there are more than 501 students in a school such that 20% of them exactly took physics and 28% of them exactly took maths.what could be the least possible no of students in the school?

a)550 b)600 c)700 d)none of these

• ans is 525. i.e. none of these.
• 9 years agoHelpfull: Yes(14) No(1)
• 20% means 1/5 and 28% means 7/25,taking the lcm of the denominators 5 and 25 we get 25,the least multiple of 25 which is greater than 501 is 525 so answer is d)none
• 9 years agoHelpfull: Yes(12) No(0)
• ans should be 560, means d) none of these
  
  take 20,28 l.c.m it will be 140,
  
  and least possible no of student , which is more than 501 and multiple of 140 , it should be 560.
• 9 years agoHelpfull: Yes(3) No(5)
• ans is 550
• 9 years agoHelpfull: Yes(1) No(0)
• 525 none of these
• 9 years agoHelpfull: Yes(1) No(0)
• none of these
  
• 9 years agoHelpfull: Yes(0) No(0)
• Of the given answers I will choose 600 as answer.for 20% and 28% we get full numbers. From another angle 525 can give full no. for 20% and 28% and answer is d). think
• 9 years agoHelpfull: Yes(0) No(0)
• can anyone explain the process..
  Thnx in advance
• 9 years agoHelpfull: Yes(0) No(0)