Please help me on a question 43.2 dg = ______ hg
2 answers:
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Answer:
a)
b) Mr. Kelly’s class.
c) $29.52
Step-by-step explanation:
a) Let's call:
s: the number of fruit pies sold by Mr. Sanchez’s class.
k:<em> </em>the number of fruit pies sold by Mr. Kelly’s class.
You can set up the following system of equations:
You can solve it by the Elimination method:
- Multiply the first equation by -1.32.
- Add both equations.
- Solve for k.
Then:
Susbtitute k into any of the original equations and solve for s:
b) The amount of money earned by Mr. Kelly’s class was:
The amount of money earned by Mr. Sanchez’s class was:
Then, the class that earned more money was: Mr. Kelly’s class.
c) Subtract both amounts of money: