some students arranged a picnic. the budget for food was Rs240. Because four students of the group failed to go, the cost of rach student got increased by Rs5. how many students went for picnic
Answers
Answered by
63
Let the give no. of students be :- x
If 4 students fail to go then :- x-4. Therefore, 240/x-4 -240/x =5. 240(1/x-4 - 1/x) =5. 240(x -1(x-4)/x^2-4x).=5. 4/x^2-4x = 5/ 240. 1/x^2-4x = 1/48. x^2 - 4x -192=0. (x-16) or (x-12). Therefore,. x=16 No. Of students went for picnic =16-4. 12 students.
If 4 students fail to go then :- x-4. Therefore, 240/x-4 -240/x =5. 240(1/x-4 - 1/x) =5. 240(x -1(x-4)/x^2-4x).=5. 4/x^2-4x = 5/ 240. 1/x^2-4x = 1/48. x^2 - 4x -192=0. (x-16) or (x-12). Therefore,. x=16 No. Of students went for picnic =16-4. 12 students.
Answered by
66
HEY MATE HERE IS YOUR ANSWER:
Attachments:
Similar questions