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Jonathan finds some nickels and quarters in his change purse. How many coins does he have if he has 12 nickels and 4 quarters? How many coins does he have if he has xx nickels and yy quarters?Total coins, 12 nickels and 4 quarters: Total coins, xx nickels and yy quarters:

Sagot :

Each nickel is worth 5 cents, and each quarter is worth 25 cents.

So, if we have 12 nickels, we can multiply this value by 5 to get its value in cents:

[tex]12\cdot5=60[/tex]

Similarly, if we have 4 quarters, we can multiply this value by 25 to get its value in cents:

[tex]4\cdot25=100[/tex]

So, in total, we have:

[tex]60+100=160[/tex]

So, for 12 nickels and 4 quarter, we have the value of 160 cents.

We can do this generally by setting the values of nickel and quarter to x and y.

If we have x nickels and each one is worth 5 cents, we have the value:

[tex]5x[/tex]

And if we have y quarters and each is worth 25 cents, we have the value:

[tex]25y[/tex]

So, in total, we have:

[tex]5x+25y[/tex]

So, for x nickels and y quarter, we have the value of 5x + 25y cents.