Question

in an envelope there are some 5 rupee notes and some 10 rupee notes total amount of these notes together is 350 rupees. number of 5 rupee notes are more by 10 than
number of 10 rupee notes. then find the number of 5 rupee and 10 rupee notes
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Answer 1

Answer:

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Let x be the number of notes of Rs. 5 and y be the number of notes of Rs. 10.

According to the question,

5x + 10y = 350

x + 2y = 70.......(i)

Also,

x = y - 10

x - y = -10 ....(ii)

Subtract (ii) from (i)

we get

3y = 60

y = 20

Put it in (i) we get

x = 10

Hence, the number of Rs. 5 notes are 10 and the number of Rs. 10 notes are 20.