Bobby is bringing his collection of dimes and quarters to the bank to deposit into his savings account. If d represents the number of dimes in Bobby’s collection, q represents the number of quarters, and the collection is worth $63.75, which of the following equations models the value of Bobby’s collection?
A.
63.75 = d + q
B.
63.75 = 25d + 10q
C.
63.75 = 10d + 25q
D.
63.75 = 0.10d + 0.25q

Please Help

Question

Bobby is bringing his collection of dimes and quarters to the bank to deposit into his savings account. If d represents the number of dimes in Bobby’s collection, q represents the number of quarters, and the collection is worth $63.75, which of the following equations models the value of Bobby’s collection?
A.
63.75 = d + q
B.
63.75 = 25d + 10q
C.
63.75 = 10d + 25q
D.
63.75 = 0.10d + 0.25q

Please Help

mathstudent55 · Answer

How much is a dime worth (in dollars), and how much is a quarter worth (in dollars)?

anonymous · Answer

umm 10 cents and 25 cents

awesome781 · Answer

D

mathstudent55 · Answer

That is in cents. How much are they worth in dollars?

anonymous · Answer

oh 1/10 of a dollar and 1/4 of a dollar

anonymous · Answer

Thanks @Awesome781 :)

mathstudent55 · Answer

Ok. 1/10 is written as 0.10 as a decimal, and 1/4 is written as 0.25 as a decimal.

mathstudent55 · Answer

If Bobby has d dimes, the dimes are worth 0.10d.
The quarters are worth 0.25q.
When you add their values, you get $63.75, so that means
0.10d + 0.25q = 63.75

mathstudent55 · Answer

The answer is D.

anonymous · Answer

yeah sorry d :)