Question

Revathy has currency notes of denomination ₹100 and ₹50. Ratio of the number of these notes is 3:7. Total cash with revathy is ₹2600 how many notes of each denomination does she have?

Answer 1

Step-by-step explanation:

let the no.of notes be 3x,7x

according to the question,

100×3x+50×7x=2600

300x+350x=2600

650x=2600

x=2600/650

x=4

denomination of ₹100 notes= 3×4=12

denomination of ₹50 notes= 7×4=28

hope it helps!!

Answer 2

Given :

• Currency notes of denomination ₹100 and ₹50.
• The ratio of the number of these notes is 3:7.
• Total cash with revathy is ₹2600

To find :

• how many notes of each denomination does she have?

Solution :

⇒ Let's find the number of notes she has.

• Let the number of ₹100 notes be 3x.
• Let the number of ₹50 notes be 7x.

$\to \sf Rs. 100 = (3x \times 100)\\ \to Rs. 50 = (7x \times \: 50)$

$\Rightarrow \sf Total \: money = (3x \times 100) + (7x \times 50)$

$\sf = 300x + 350x$

$\sf = 650x$

$\longrightarrow \sf Total \: money = Rs. 2600$

$\sf 650x = 2600$

$\sf x = \dfrac{2600}{650}$

$\sf x = 4$

⇒ Now, the number of notes :

→ 3x = 3 × 4

= 12

→ 7x = 7 × 4

= 28

• Therefore, Revathy has 12 of ₹100 notes and 28 of ₹50 notes.