A is two-third of the sum of B and C. B is three-quarter of the sum of A and C. Express A as a fraction of B.
A is two-third of the sum of B and C. B is three-quarter of the sum of A and C. Express A as a fraction of B.
Hello dtay
Welcome to Math Help Forum!You need to create two equations involving and , and then eliminate to find an equation involving just and .
Here are some clues:
The first statement can be written:
So if we multiply by
(1)
Now write down the second statement in a similar way, and use equation (1) to eliminate .
Then re-arrange so that you have on one side, and on the other. Finally, divide both sides by to find . I get the answer:
Can you fill in the gaps?
Grandad