SOLUTION: One computer hard disk has 1.5 times the memory of another hard disk. If their combined memory is 10.5 GB, what is the memory of each ?

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Question 159808: One computer hard disk has 1.5 times the memory of another hard disk. If their combined memory is 10.5 GB, what is the memory of each ?
Found 2 solutions by KnightOwlTutor, jojo14344:
Answer by KnightOwlTutor(293) About Me  (Show Source):
You can put this solution on YOUR website!
X=memory capacity of hard disk 1
1.5X= memory capacity of hard disk 2
X+1.5X=10.5GB
2.5X=10.5GB
Divide 2.5 on both sides
X=4.2GB=memory capacity of hard disk 1
(1.5)(4.2)=6.3 GB memory capacity of hard disk 2
4.2+6.3=10.5

Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!

As per stated: HD%5B1%5D=1.5HD%5B2%5D -------> condition 1
So, HD%5B1%5D%2BHD%5B2%5D=10.5gb, subst. condition 1:
1.5HD%5B2%5D%2BHD%5B2%5D=10.5
2.5HD%5B2%5D=10.5 ------> cross%282.5%29HD%5B2%5D%2Fcross%282.5%29=cross%2810.5%294.2%2Fcross%282.5%29
HD%5B2%5D=4.2gb
Via condition 1:
HD%5B1%5D=1.5%2A4.2=6.3gb
Besides,
6.3gb%2B4.2gb=10.5gb
Thank you,
Jojo