Question

a 500 rupee note was changed to 50 and hundred rupee notes. 7 notes in all. 1) how many hundred rupee note were there? 2) how many 50 rupee note were there? (Hint: take the number of hundred rupee notes as x)​

Answer 1

Answer:

1) Number of hundred Rupee Notes = 3

2) Number of 50 Rupee Note = 4

Step-by-step explanation:

Let's assume that, the number of ₹100 notes was x

According to the problem:

Number of ₹50 notes was 7 - x.

∴ 100x + 50(7 - x) = 500

=> 100x - 50x = 500 - 50 times 7

=> 50x = 500 - 350 = 150

∴  $x = \frac{150}{50} = 3$

∴ $7 - x = 7 - 3 = 4$

1) Number of hundred Rupee Notes = 3

2) Number of 50 rupee note = 4