c)

To multiply two fractions, simply multiply the numerators together and the denominators together. So for , we calculate for the numerator, and for the denominator. Thus, we get . Now, simplify that fraction by finding the greatest common divisor, which is 15. Dividing both numerator and denominator by 15 gives us .

Next, if you want to visualize this, think of fractions like slices of pizza! If you had 12 slices of pizza divided into 5 pieces each and then multiplied that by 10/9 of another pizza, you can see how those slices will combine together to give you a total of 8 slices for every 3 pieces! So, make sure to have your toppings ready for that delicious conceptual slice of math!