Ratio
Algebra
Level
1
If A:B = 1:2, B:C = 4:1, C:D = 5:6, then A:B:C:D is equal to which of the following??
20:10:5:6
10:20:5:6
10:10:6:5
10:20:6:5
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If A/B =1/2 then in the ratio A:B:C:D put a for 1 and b for 2. It become 1:2:C:D. Then we have B/C = 4/1 in which substitute B=2 and find C=1/2. C/D=5/6 in which put C=1/2 then we get D as 3/5. So I get 1:2:1/2:3/5. I multiply all the numbers by 10. So the answer is 10:20:5:6