Write the ratio 2.7kg to 1.8kg as a fraction to the simplest form, with whole numbers in the numerator and denominator.

2.7/1.8 = 3/2 OR

2700/1800 = 27/18 = 3/2

2.7:1.8

2:6

To write the ratio 2.7kg to 1.8kg as a fraction in its simplest form, we need to divide both numbers by their greatest common divisor (GCD).

First, we find the GCD of 2.7 and 1.8. To simplify the calculation, we can convert them to their simplest form by removing the decimal point:
2.7 becomes 27 and 1.8 becomes 18.

The prime factorization of 27 is 3 × 3 × 3, and the prime factorization of 18 is 2 × 3 × 3. We can see that both numbers have a common factor of 3.

Now, we can divide both 27 and 18 by 3:
27 ÷ 3 = 9
18 ÷ 3 = 6

Therefore, the simplified ratio of 2.7kg to 1.8kg is 9/6.