Question

Anushka has x notes of 100 Rs and y notes of 50 Rs, then the amount with Anushka is----
100x + 50y
50x + 100y
150x + 50y
50x + 150y​

Answer 1

Answer:

100x + 50y

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Answer 2

Answer:

Step-by-step explanation:

Anushka had x notes of Rs. 100 and y notes of Rs. 50.  According to the first condition,  100x + 50y = 2500  ∴ 2x + y = 50 …(i)

[Dividing both sides by 50]

According to the second condition,  100y + 50x = 2000  ∴ 2y + x = 40 … [Dividing both sides by 50]

i.e. x + 2y = 40 ∴ 2x + 4y = 80 …(ii)

[Multiplying both sides by 2]  Subtracting equation (i) from (ii), we get ∴ Anushka had 20 notes of Rs. 100 and 10 notes of Rs. 50.