Question

Kiran had $85$ currency notes in all, some of which were of Rs. $100$ denomination and the remaining of Rs. $50$ denomination. The total amount of all these currency notes was Rs. $5000$. How much amount did she have in the denomination of Rs. $50$?

• A. Rs. $2725$
• B. Rs. $3500$
• C. Rs. $1500$
• D. Rs. $2800$

Answer 1

Answer: (B)

Rs. $3500$

Let $100$ Rs note be $x$ and $50$ Rs note be $y$

Total number of notes =$x+y=85$................(1)

Total amount of these currency notes + $5000=100x+50y$.............(2)

Multiplying equation 1 with $50$

therefore we get $50x+50y=4250$.......(3)

Subtracting equation 3 from equation 2, we get

$50x=750$

$x=15$

Substituting $x=15$ in equation 1, weget $y=70$

Amount in dominnation of $50$ Rs=$70\times 50=3500$