write this ratio as a fraction in lowest terms . 90 minutes to 20 minutes

To express the ratio 90 minutes to 20 minutes as a fraction in lowest terms, we can divide both numbers by their greatest common divisor (GCD).

The GCD of 90 and 20 is 10.

Dividing both numbers by 10, we get:

(90/10) / (20/10) = 9/2.

Therefore, the ratio 90 minutes to 20 minutes expressed as a fraction in lowest terms is 9/2.