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A sum of r.s 500 is …

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A sum of r.s 500 is in the form of denomination of r.s 5 and r.s 10.lf the total number of notes is 90 find the number of not. es of each denomination

Posted by Mmfouzi Shaik 6 years, 4 months ago

CBSE > Class 08 > Mathematics

2 answers

Gaurav Seth 6 years, 4 months ago

Let no. of Rs 5 notes be x and no. of Rs 10 notes be y
Total number of notes is 90 ⇒ x + y = 90 ........(1)
Total amount = 500
5x + 10y = 500 ...(2)
Multiply equation (1) by 10
10x + 10y = 900 .....(3)
Subtract eqution (2) from equation (3)
10x + 10y = 900
5x + 10y = 500
----------------------
5x = 400
----------------------

x = 80
y = 10

No. of Rs 5 notes = 80
No. of Rs 10 notes = 10

0Thank You

Mmfouzi Shaik 6 years, 4 months ago

I dont no

0Thank You

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CBSE > Class 08 > Mathematics