Solution-
<em>Hint- A nickel is worth 5 cents and a dime is worth 10 cents.</em>
Suppose x number of nickels and y number of dimes are present.
Worth of nickels = x × 5 =5x cents =
Worth of dimes = y × 10 =10y cents =
Net worth = Worth of nickels + Worth of dimes = $9.45
If the number of dimes is doubled, then
Worth of dimes = 2 × y × 10 =20y cents =
Net worth = Worth of nickels + Worth of dimes = $16.65
Subtracting both the equation,
Putting the value of y in any equation will give the value of x,
the value of x was found to be 45.
∴ Number of nickels are 45 and number of dimes are 72.