Javior has an equal number of dimes, nickels and
quarters. He has a total of $2.40. How many coins
does he have all together?
?
Dimes:
Nickels:
Quarters:
?
?
Answer:
?
Assign x to nickel (.05) 2x to the dime (.10) 5x to the quarter (.25)
x + 2x + 5x = 2.40 8x = 2.40 Divide both sides by 8 to isolate x x = .30 Insert .30 for x in formula .30 + (2)x(.30) + (5)x(.30) = 2.40 .30 + .60 + 1.50 = 2.40 2.40 = 2.40
