Question

William fills 1/3 of a water bottle in 5/9 of a minute. How many can be filled in a minute

Answer 1

For this case we can propose a rule of three:

`\frac {1} {3}`bottle ------------>
`\frac {5} {9}`minutes

x --------------------------------------> 1 minute

Where the variable "x" represents the number of bottles that can be filled in 1 minute.

`x = \frac {1 * \frac {1} {3}} {\frac {5} {9}}\\x = \frac {\frac {1} {3}} {\frac {5} {9}}\\x = \frac {9 * 1} {3 * 5}\\x = \frac {9} {15}\\x = \frac {3} {5}`

Thus, William can fill
`\frac {3} {5}` of a water bottle in 1 minute.

Answer:

William can fill
`\frac {3} {5}` of a water bottle in 1 minute.