elijahdecent1436 elijahdecent1436
  • 19-07-2019
  • Mathematics
contestada

A pile of 42 coins worth $4.90, consisting of nickels and quarters. How many nickels are there?

Respuesta :

nuuk nuuk
  • 23-07-2019

Answer:14

Step-by-step explanation:

A nickel is 5 cents (20% of dollar)

and a quarter is 25 cents (25% of dollar)

We have given a pile of 42 coins worth of $4.90

Let x be the no nickels and

y be the no of quarter

therefore

x+y=42    -----1

[tex]\frac{x}{4}[/tex]+[tex]\frac{y}{20}[/tex]=4.90 ---2

Solving [tex]\left ( 1\right )&\left ( 2\right )[/tex] we get

x=14 & y=28

Therefore no of nickels is 14 & no of quarters is 28

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