Question

If A:B=5:8 and B:C=18:25,then A:C will be​

Answer 1

Explanation:

① A : B = 5 : 8

• $\frac{A}{B}$ = $\frac{5}{8}$

Then,

• A = 5
• B = 8

② B : C = 18 : 25

• $\frac{B}{C}$ = $\frac{18}{25}$

Then,

• B = 18
• C = 25

③ A : C = ?

• $\frac{A}{C}$

→ $\frac{A}{B} \times \frac{B}{C}$

→ $\frac{5}{8} \times \frac{18}{25}$

→ $\frac{9}{4} \times {5}$

→ $\frac{9}{20}$

:. A : C = 9 : 20