Quote:
Originally Posted by GratefulCitizen
A + B = $1.10
A - B = $.10
Add the equations together.
2A + 0 = $1.20
2A = $1.20
A = $.60
B = $.50
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Nope. A -B = 1.0 in your equation. so 2a would equal 0.1, thus a equals 0.05.
To look at it another way:
Let's use "A" as the cost of the ball. Since the bat is $1 more, it can be rewritten as "A+1"
So A+A+1 = 1.1 simplify to 2A +1 =1.1
Now subtract 1 from both sides: 2A = 0.1
Divide both by 2: A = 0.05.
Double check your work 0.05 +(0.05 +1) = 1.1
0.05 + 1.05 = 1.1
All checks out.
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Last edited by PedOncoDoc; 04-21-2020 at 10:33.
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