A cookie factory uses 2⁄5 of a bag of flour in each batch of cookies. Yesterday, the factory used 4⁄5 of a bag of flour. How many batches did the factory make yesterday?

Answer 1

x = number of batches

2/5 bags per batch

4/5 = 2/5 * x

5(4/5) = 5(2/5 * x)

4 = 2*x

2 = x