Question 733094
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Kendra has $4.25 in dimes and quarters. If she has 3 times as many quarters as dimes, 
how many of each coin does she have?
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This problem is ideal to solve it mentally, without using equations.


Indeed, according to the problem, we can group the coins in sets, 
each containing 3 quarters and one dime.


Each such set is worth 3*25 + 10 = 85 cents.

Hence, the number of sets is  {{{425/85}}} = 5.


So, Kendra has 5 dimes and 15 quarters.


<U>CHECK</U>.  5*10 + 15*25 = 425 cents = $4.25.   ! correct !
</pre>

Solved.


The solution and the answer in the post by @lynnlo both are incorrect.