Question

a sum of rupees 800 is in the form of denomination of rupees 10 and 20 if the total number of notes is 50 find the number of notes of each type​

Answer 1

Answer:

Step-by-step explanation:

Let there be X notes of Rs 10.

Total number of notes = 50.

∴ Number of notes of Rs 20 = (50 – x)

Total sum of money = Rs 800

∴ 10x+ 20 (50 – x) = 800

⇒ 10x+ 1000 – 20x = 800

⇒– 10x = 800 – 1000

⇒ – 10x= – 200

⇒x= 20

∴ 50 – x = 50 – 20= 30

So, there are 20 notes of Rs 10 and 30 notes of Rs 20.