This is a GRade 6 math lesson.
2007-12-05 23:40:25 · 6 answers · asked by Mary Grace C 1 in Science & Mathematics ➔ Mathematics
A:B = 4:9 = 24:54 (got by multiplying by 6)
B:C = 6:7 = 54:63 (got by multiplying by 9)
A:B :: 24:54
B:C :: 54:63
therefore A:C ::24:63
or 8:21 (got by dividing 3)
2007-12-05 23:48:04 · answer #1 · answered by Indian Primrose 6 · 1⤊ 1⤋
LCM(9,6) = 18
A/B = 4/9
B/C = 6/7
A/C = A/B * B/C
= 4/9 * 6/7
= 4/3 * 2/7
= 8/21
A:C = 8:21
2007-12-05 23:44:58 · answer #2 · answered by gudspeling 7 · 1⤊ 1⤋
A : B : C
4 : 9
__ 6 : 7
LCM of 6 and 9 is 18
A : B : C
8 :18
__18 : 21
A : C = 8 : 21
2007-12-05 23:43:54 · answer #3 · answered by Anonymous · 1⤊ 0⤋
A/B = 4/9
B/C = 6/7
A/C = (A/B)X(B/C) = 4/9X6/7 = 8/21
A = 8
C = 21
A : C = 8:21
2007-12-05 23:55:15 · answer #4 · answered by pritamgola 2 · 0⤊ 1⤋
ANSWER IS 8:21
2007-12-05 23:51:02 · answer #5 · answered by Anonymous · 0⤊ 0⤋
A __ B__ C
4 ___9
8___18
_____6___7
____18___21
8___18___21
A : C = 8 : 21
2007-12-06 00:02:41 · answer #6 · answered by Como 7 · 2⤊ 1⤋