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Ratio - Proportion - Variation

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by kvcpk » Wed Jul 14, 2010 10:32 am
pullagurla wrote:The ratio between the ages of S and C is 2:5 . After 8 years their ages will be in the ratio of 1:2. the difference between their present age is ?
a.24
b.26
c.29
d.32
e.none
s/c = 2/5
s+8/c+8 = 1/2
2s+16=c+8
2s+16=5s/2 +8
s/2 = 8
s=16
c=40
difference = 24

pick A
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