Question

standard form of 30 by 40

Answer 1

$\frac{30}{40} = \frac{3}{4}$
As they both are divisible by 10.

as well as it is divisible by 5 , which is a divisible by 10
the answer you're going to get at last would be the same
3/4
Hope this helps

Answer 2

30/40
$30 \div 40 = 3 \div 4$ =3/4