Question

I have 1,000 riyals in ten and five riyal notes. If the number of ten riyal notes that I have is ten more than the number of five riyal notes, how many notes do I have in each denomination?

Answer 1

66 notes of 5 riyal

76 notes of 10 riyal

Explanation:

(10x + 10) +5x = 1000

15x = 990

x = 66

so there are 66 of 5 riyal notes and 66 + 10 ie 76 of 10 riyal notes