Question

if a:b = 7:3 then (a +2b) : (a-2b)

Answer 1

since a:b=7:3

it gives a=7 and b=3

so answer will be 13:1

Answer 2

Answer:

Given:-

• $a:b=7:3$
• $\implies \: a = 7x \: and \: b = 3x$

To Find:-

• $(a +2b) : (a-2b)$

Solution:-

$\implies \: 7x + 2 \times 3x:7x - 2 \times 3x$

$\implies \: 7x + 6x:7x - 6x$

$\implies \: 1</u></strong><strong><u>3</u></strong><strong><u>x:x$

$\implies \: </u></strong><strong><u>13</u></strong><strong><u>:1$

$(a +2b) : (a-2b) = </u></strong><strong><u>13</u></strong><strong><u> : 1$