Chapter 4: Algebra Puzzle

3*3 puzzle

My solution A
3 Umbrellas = 12
So 1 Umbrella = 4
1 Umbrella + 2 Flowers = 10
So 4 (Umbrella) + 6 =10
Since 6 = 2 Flowers
So 1 Flower = 3
1 Flower + 2 Clock = 33
So 3 (Flower) + 30 = 33
Since 30 = 2 Clock 
So 1 Clock = 15

My solution B
Let a represent Umbrella
Let b represent Flower
Let c represent Clock
3a = 12
a = 12÷3
Therefore, a = 4
Since a +2b =10
4(a) + 2b =10
2b = 10 - 4
2b = 6
Therefore, b = 3
b +2c = 33
3 + 2c = 33
2c = 30
Therefore, c = 15