Q. 224.5( 12 Votes )

Meena went

Answer :

To find: Notes of denomination Rs 50 and Rs 100.


Explanation:


Let the number of Rs. 50 and Rs. 100 notes be ‘a’ and ‘b’.


Given, Meena went to a bank to withdraw Rs 2000. She asked the cashier to give her Rs 50 and Rs 100 notes only.


50a + 100b = 2000


a + 2b = 40 …… (1)


Also, Meena got 25 notes in all.


a + b = 25 ……(2)


(1) – (2)


a+2b–(a+b) =40–25


a+2b–a–b=40–25


b = 15


Put the value of b in eq. 1 to get,


a+15=25


a=25–15


Thus, a = 10


Therefore, Meena received 10 notes of denomination 50 and 15 notes of denomination 100.


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