Question

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

Answer 1

Answer:14

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

`(x)/(4)`+
`(y)/(20)`=4.90 ---2

Solving
`\left ( 1\right )&\left ( 2\right )` we get

x=14 & y=28

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