Numbers For The Letters?
A - B = B
B * C = A
D : B = E
C * C = E
C + E = A
For which numbers stand A, B, C, D and E?
Posts
Correct Numbers For Letters
What was the question?
Let's first rewrite all equations and number them
1. A - B = B
2. B * C = A
3. D : B = E
4. C * C = E
5. C + E = A
For which numbers stand A, B, C, D and E?
From 1, A = 2B. Putting this in 2 gives,
C = 2.
Putting C = 2 in 4 gives, E = 4.
So from 5, A = C + E = 2 + 4 = 6.
Equation 2 gives, B = A/C = 6/2 = 3.
And equation 3 gives D = B * E = 3 * 4 = 12.
Conclusion : A = 6, B = 3, C = 2, D = 12 and E = 4.
