Cakes and sundaes 2
Algebra
Level
1
The price of one sundae is equivalent to the price of one cake plus $1.
The price of a one sundae and one cake is $11.
What is the price of one sundae (in $)?
The answer is 6.
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1 solution
We can right the first statement as s = c + 1. The second statement is s + c = 11. Using substitution, we get (c + 1) + c = 11. 2c + 1 = 11. 2c = 10. c = 5. Plug that into the first one and get s = 6