Answer:
2) First option
3) Second option
Step-by-step explanation:
5² = 625
13 × 8 × 5 = 520
Well, both AMC are on the line I don’t exactly understand what the question is
How to solve it is shown with the process of Substitution in the following pictures. (The steps are listed in order from the first picture to the second picture.)
Hope this helps!
First, let's define the variables d and q as follows:
d: total number of dimes
q: total number of quarters.
"Joan has an equal number of dimes and quarters" means that d=q.
"...with <span>with a total value of $1.40</span>" means that
0.1 d + 0.25 q =1.40. ***
This is because Joan has a total of d dimes each with a value of 0.1$, and a total of q quarters, each with a value of 0.25.
Since d=q, we can write the equation *** as:
0.1 q +0.25 q=1.40
0.35 q=1.40
q=1.40/0.35 = 4.
Thus, Joan has a total of 4 quarters, and 4 dimes.
Answer: 8 coins.
