Hi there, here's your answer:
According to the question, we find 16 out of 20 objects.
To express this in a fraction at its simplest form,
We first write down the fraction.
The HCF of 16 and 20 is 4.
On dividing the numerator and denominator by 4, we get:

To express
as a decimal:
Observe the denominator. We know that 5×2 = 10
On multiplying the numerator and denominator by 2, we get

Which, in decimal form, is 0.8
To express
as a percentage,
We simply multiply the fraction by 100.
×
×
%
Therefore, 16 out of 20 in percentage is written as 80%.
Hope it helps!