To express 0.28 as a fraction of 0.8, you divide both by 0.4 to get 0.7/2, which simplifies further to 7/10, or seven tenths.
The question asks to express 0.28 as a fraction of 0.8. To do this, you would write 0.28 over 0.8 as a fraction, which is 0.28/0.8.
Simplifying the fraction involves dividing both the numerator (top number) and the denominator (bottom number) by the greatest common factor that they share.
In this case, both numbers can be divided by 0.4, giving us 0.28 ÷ 0.4 over 0.8 ÷ 0.4, which simplifies to 0.7/2.
To further simplify, we divide both the numerator and the denominator by their greatest common divisor.
Therefore, the simplified fraction is ⅔ (or 7/10 when written in simplest form).