Answer:
21 : 8
Step-by-step explanation:
A:B=3:4
A/B = 3/4
A = 3/4 B..... (1)
B:C =7:2
B/C = 7/2
B = 7/2 C.... (2)
From equations (1) & (2)
[tex]A = \frac{3}{4} \times \frac{7}{2} C \\ \\ A = \frac{21}{8} \\ \\ \frac{A}{C} = \frac{21}{8} \\ \\ A :C = 21 : 8[/tex]
