1.

A,B,C,D are 4 number such that A:B=2:3, B:C=6:7, C:D=21:25 find the ratio A:D​

Answer»

-STEP EXPLANATION: A:B=2:3 A/B=2/3B:C=6:7 B/C=6/7A/B X B/C=2/3 X6/7i. E; A/C=12/21=4/7C:D=21:25 C/D=21/25A/C XC/D =4/7 X 21/25i. e ; A/D=12/25 A:D=12:25



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