Question

if a:b=5:7 and b:c =14:15 find a:c .​

Answer 1

Step-by-step explanation:

if a/b =5/7

and b/C =14/15

then a/c=5/15

Answer 2

Answer:

$a:c=2:3$

Step-by-step explanation:

Method 1)

$a:b=5:7=10:14$

$b:c=14:15$

∴$a:b:c=10:14:15$

$a:c=10:15=2:3$

∴$a:c=2:3$

Method 2)

$\frac{a}{b} =\frac{5}{7}$

$\frac{b}{c} =\frac{14}{15}$

$a:c=\frac{a}{c} =\frac{a}{b} *\frac{b}{c} =\frac{5}{7} *\frac{14}{15} =\frac{2}{3}$

∴$a:c=2:3$