Meena went

To find: Notes of denomination Rs 50 and Rs 100.

Explanation:

Let the number of Rs. 50 and Rs. 100 notes be ‘a’ and ‘b’.

Given, Meena went to a bank to withdraw Rs 2000. She asked the cashier to give her Rs 50 and Rs 100 notes only.

50a + 100b = 2000

a + 2b = 40 …… (1)

Also, Meena got 25 notes in all.

a + b = 25 ……(2)

(1) – (2)

a+2b–(a+b) =40–25

a+2b–a–b=40–25

b = 15

Put the value of b in eq. 1 to get,

a+15=25

a=25–15

Thus, a = 10

Therefore, Meena received 10 notes of denomination 50 and 15 notes of denomination 100.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Resistors in Parallel39 mins
Transportation in One Shot42 mins
Resistors in Series42 mins
Human Reproduction in One Shot45 mins
Outcomes of Democracy43 mins
Refraction of Light-241 mins
Extraction of Metal56 mins
Reflection of light-238 mins
Purification of Metals60 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
view all courses
RELATED QUESTIONS :

Solve each of theRS Aggarwal - Mathematics

If 2x – 3y = 7 anRD Sharma - Mathematics

Solve the followiRD Sharma - Mathematics