Q.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?
Since the ratio of currency notes is 2:3:5. Therefore,
Let the number of currency notes of Rs.100, Rs.50 and Rs.10 be 2x, 3x, 5x respectively.
Hence according to the question equation becomes,
1002x + 503x + 105x = 400000
or 200x + 150x + 50x = 400000
or 400x = 400000
Dividing both sides by 400 we get,
x = 1000 .
No. of Rs.100 notes = 21000 = 2000 notes
No. of Rs.50 notes = 31000 = 3000 notes
No. of Rs.10 notes = 51000 = 5000 notes