Respuesta :

Let's begin by listing out the information given to us:

1/4 batch of cookies = 1/10 hour

x batches of cookies = 1 hour

To solve for the number of batches of cookies in one 1 hour, we will use simple proportion

x * 1/10 = 1/4 * 1

4x = 10

x = 10/4 = 2.5

Hence, 2½ batches of cookies are done in 1 hour