SOLUTION: I need help with this question: 4 time the number B is equal to the number A. The sum of 2 times A and two times B is 49. What is A and B?

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Question 1075985: I need help with this question: 4 time the number B is equal to the number A. The sum of 2 times A and two times B is 49. What is A and B?
Found 2 solutions by addingup, MathTherapy:
Answer by addingup(3677)   (Show Source): You can put this solution on YOUR website!
OK, this one by substitution:
4B = A therefore B = A/4
2A+2B = 49 substitute for B:
2A+2(A/4) = 49 distribute the 2 (Distributive Property of Multiplication)
2A+A/2 = 49 multiply all sides times 2
4A+A = 98
5A = 98
A = 19.6
B = A/4
B = 19.6/4 = 4.9
------------------------
2A+2B = 49
2(19.6)+2(4.9)= 49
39.2+9.8 = 49 Correct

Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

I need help with this question: 4 time the number B is equal to the number A. The sum of 2 times A and two times B is 49. What is A and B?
4B = A ------- eq (i)

2A + 2B = 49 ----- eq (ii)

2(4B) + 2B = 49 ------ Substituting 4B for A in eq (ii)

8B + 2B = 49

10B = 49

B = 

A = 

That's it....nothing CONFUSING and/or COMPLEX!! 

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