Final answer:
To express the number of skateboards as a fraction of the number of bicycles, we can use the ratio 4 skateboards: 5 bicycles, To express this as a fraction, we can set up the ratio as a fraction with the number of skateboards as the numerator and the number of bicycles as the denominator, which can be written as the fraction 4/5.
Step-by-step explanation:
To express the number of skateboards as a fraction of the number of bicycles, we need to compare the number of skateboards to the number of bicycles. The store manager sells 4 skateboards for every 5 bicycles, so we can write this as a ratio: 4 skateboards: 5 bicycles. To express this as a fraction, we can set up the ratio as a fraction with the number of skateboards as the numerator and the number of bicycles as the denominator. So the fraction is 4/5.