in 1st figure
2:1=(x+2):2
2/1=(x+2)/2
4=x+2
x=2.
Similarly in the 2nd figure
8:5=(8+3):(5+x)
8/5 = 11/ (5+x)
8(5+x) =55
40+8x=55
8x=15
x=15/8
x=1.875
Doesn't ask what kind of cd's and what age it was aimed at
Answer:
f=3n, where n is the number of cakes.
Step-by-step explanation:
Yes, the equation f=3n, where n is the number of cakes, models the situation.