Math, asked by tarunvvm, 1 month ago

A sum of R500 is in the form of notes of denominations of 5 and R10. If the total number ofnotes is 90 then find the number of notes of each type.​

Answers

Answered by paramgandhi55
1

Answer:

Let the number of ₹ 5 notes = x

∴ The number of ₹10 notes = 90-x

Value of ₹ 5 notes= x \times₹5 = ₹ 5x

an the value of ₹10 notes = (90-x)\times₹10 = ₹(900-10x)

∴Total value of all the notes = ₹500

∴5x+(900-10x)=500

⇒5x+900-10x=500

⇒-5x=500-900

⇒-5x=-400

⇒x=\frac{-400}{-5}

⇒x=80

∴ The number of ₹ 5 notes = x = 80 and

The number of ₹ 10 notes = 90-x = 90-80 = 10 .

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