Q. 14.1( 93 Votes )

In an envelope there are some 5 rupee notes and some 10 rupee notes. Total amount of these notes together is 350 rupees. Number of 5 rupee notes are less by 10 than number of 10 rupee notes. Then find the number of 5 rupee and 10 rupee notes.

Answer :

Let the number of 5 rupees notes = x


Let the number of 10 rupees notes = y


Given, Total amount is 350 Rupees


5x + 10y = 350 eq.[1]


Also,


Number of 5 rupees notes are less by 10 than number of 10 rupees note,

y = x - 10

x = y + 10 eq.[2]


Putting [2] in [1]


5(y + 10) + 10y = 350


5y + 50 + 10y = 350


15y = 300


y = 20


Then, x = y + 10


x = 20 + 10


x = 30.


Answer: 30 notes of Rs 5 and 20 notes of Rs. 10.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Goprep Genius Quiz on Linear EquationsGoprep Genius Quiz on Linear EquationsGoprep Genius Quiz on Linear Equations34 mins
Smart Revision | Linear Equations in Two VariablesSmart Revision | Linear Equations in Two VariablesSmart Revision | Linear Equations in Two Variables34 mins
Interactive session on Linear Equations in Two VariablesInteractive session on Linear Equations in Two VariablesInteractive session on Linear Equations in Two Variables30 mins
NCERT |  Imp. Qs. on Linear Equations in Two VariablesNCERT |  Imp. Qs. on Linear Equations in Two VariablesNCERT | Imp. Qs. on Linear Equations in Two VariablesFREE Class
NCERT | Linear EquationsNCERT | Linear EquationsNCERT | Linear Equations41 mins
Bonus Questions on Linear Equations in Two VariablesBonus Questions on Linear Equations in Two VariablesBonus Questions on Linear Equations in Two Variables48 mins
Quiz | Testing Your Skills on Linear Equation in Two VariablesQuiz | Testing Your Skills on Linear Equation in Two VariablesQuiz | Testing Your Skills on Linear Equation in Two Variables36 mins
NCERT | Imp Qs on Linear equation in Two VariablesNCERT | Imp Qs on Linear equation in Two VariablesNCERT | Imp Qs on Linear equation in Two Variables43 mins
Quiz | Important Questions on Linear Equations In Two VariablesQuiz | Important Questions on Linear Equations In Two VariablesQuiz | Important Questions on Linear Equations In Two Variables49 mins
Champ Quiz | Do you Know about Linear Equations ?Champ Quiz | Do you Know about Linear Equations ?Champ Quiz | Do you Know about Linear Equations ?35 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :