3 no.'s A, B & C are in the ratio of 12:15:25. If sum of these no.'s is 312, find the ratio between the difference of B & A & the difference of C & B.
Answers:
A) 1 : 5	B) 3 : 10	C) 4 : 7	D) 4 : 11	E) 5 : 9
We have, a = 12, b = 15, c = 25 and x = 312.   ax_ 12 X 312   a+b+c 12+15+25   — 72,   bx _ 15 X 312 3 : 10 — — 90 a +b+c 12 + 15+ 25 cx 25 X 312 And, C =   a+b+c 12 + 15+ 25   ...3 : 10-A=18 andC-3 : 10=60   - 150   Thus, their ratio = 18 : 60 or 3 : 10   3 : 10
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3 no.'s A, B & C are in the ratio of 12:15:25. If sum of these no.'s is 312, find the ratio between the difference of B & A & the difference of C & B.