Question

I have Rs 1000 in ten and five rupee notes. If the number of ten rupee notes that I have is ten more than the number of five rupee notes, how many notes do I have in each denomination?

Answer 1

Let the number of five rupess notes are x

Number of ten rupees notes are x + 10

Amount due to five rupees notes = 5 \(\times\) x = 5x

Amount due to ten rupees notes = 10(x + 10) = 10x + 100

According to the question total amount = Rs 1000

5x + 10x + 100 = 1000

15x = 900

x = 60

Therefore the number of five rupess notes are 60

Number of ten rupees notes are x + 10 = 60 + 10 = 70