NCERT Solutions for Class 8 Mathematics Chapter 2
Important NCERT Questions
Linear Equations in one Variable Chapter 2 Exercise 2.2
NCERT Books for Session 2022-2023
CBSE Board
Questions No: 14
Lakshmi is a cashier in a bank. She has currency notes of denominations ₹100, ₹50 and ₹10 respectively. The ratio of the number of these notes is 2:3:5. The total cash with Lakshmi is ₹4,00,000. How many notes of each denomination does she have?
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Let number of notes be 2x,3x and 5x.
According to question, 100x2x+50x3x+10x5x=4,00,000
⇒ 200x+150x+50x=4,00,000
⇒ 400x-4,00,000
⇒ 400x/400=4,00,000/400 [Dividing both sides by 400]
⇒ x=1000
for more answers vist to:
https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-2/
Let number of notes be 2x,3x and 5x.
According to question, 100x2x+50x3x+10x5x=4,00,000
⇒ 200x+150x+50x=4,00,000
⇒ 400x-4,00,000
⇒ 400x/400=4,00,000/400 [Dividing both sides by 400]
⇒ x=1000
Hence, number of denominations of ₹100 notes = 2 x 1000 = 2000
Number of denominations of ₹50 notes = 3 x 1000 = 3000
Number of denominations of ₹10 notes = 5 x 1000 = 5000
Therefore, required denominations of notes of ₹100, ₹50 and ₹10 are 2000, 3000 and
5000 respectively.
Class 8 Maths Chapter 2 Exercise 2.2 Solution in Video
for more answers vist to:
https://www.tiwariacademy.com/ncert-solutions/class-8/maths/chapter-2/