Joey fills 1/5 of a toffee box in 1/25 of a minute. hiw much time will it take to fill a toffee box

(1/5) / (1/25) = 1 / x ... 1/5 box to 1/25 min = 1 box to x min

cross multiply because this is a proportion

(1/5) (x) = (1/25) (1)

1/5x = 1/25

x = 1/25 * 5

x = 5/25 = 1/5 ... it will take 1/5 of a minute to fill the entire box