Aboy has 11 coins in dimes and quarters. their value is $1.70. how many of each does he have? which of the following equations could be used to solve the problem? x + (11 - x) = 1.70 25x + 10(11 - x) = 1.70 0.10x + 0.25(11 - x) = 1.70

Translate the statements into equations. We can use 'x' for dimes and 'y' for quarters.

"A boy has 11 coins in dimes and quarters"



"Their value is $1.70"



To solve this, we can first solve for one of the variables in the first equation, and then plug that into the second equation:



Subtract 'x' to both sides:



Now plug this value of 'y' into the second equation:



So this equation could be used to solve the problem.

They are somewhat similar