Question

Diego is collecting dimes and nickels in a jar. He has collected $22.25 so far. The relationship between the numbers of dimes and nickels, and the amount of money in dollars is represented by the equation 0.10d+0.05n=22.25.

Select the THREE values (d, n) that could be solutions to the equation.
A. (0, 455)
B. ( 0.50, 435)
C. (233, 21)
D. (118, 209)
E (172, 101)

Answer 1

D. (118, 209)

Explanation:

0.10d substitute "d" for 118 which equals $11.80

0.05n substitute "n" for 209 which equals $10.45

So, $11.80 + $10.45 = $22.25

Which makes D the correct answer