Math, asked by saurabhmittal4423, 1 year ago

If value of a:b=3:4;b:c=5:7;c:d=8:9 find the value of a:b:c:d with proper explanation

Answers

Answered by ramuchhetri
1
a:b = 3:4 b:c = 5:7
or a: b = (3×5) : (4×5) and b : c = (5×4). (7×4)
a : b = 15 : 20 and b : c = 20 :28
so a : b : c = 15 : 20 :28 and c : d = 8 :9
again a : b : c = (15×8) :(20×8) : (28×8) and c : d = (8×28) : (9×28)
a : b : c = 120 : 160 : 224 and c : d = 224 : 252
so a : b : c : d = 120 : 160 : 224 : 252 = 30 : 40 : 56 : 63
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