Subhash has 90 currency notes, some of which are Rs. 1000 denomination and rest of Rs. 500 denomination. The total amount is Rs 71,000. How many notes he has in denomination of Rs. 500?
(A) 30
(B) 32
(C) 34
(D) 38
Answer: (D)
Explanation:
Let the no. of Rs. 500 note be X Then the no. of Rs. 1000 note = 90 – X ∴ 500X + 1000(90 – X) = 71000 ∴ 500X + 90000 – 1000X = 71000 ∴ 500X = 19000 ∴ X = 38