Question

Holly drinks 2 2/5 litres of water each day the water comes in 1 2/5 litre bottles how many bottles does Holly drink in a week?

Answer 1

Answer:

12 bottles per week

Step-by-step explanation:

$2\frac{2}{5} = \frac{12}{5}$

$\frac{12}{5}$ L per day = $\frac{12}{5}$ $\frac{L}{day}$

There are 7 days in a week so $7\frac{days}{week}$

Convert L per day to L per week

$\frac{12}{5} \frac{L}{day} * 7\frac{days}{week} = \frac{12*7}{5} \frac{L}{week} = \frac{84}{5} \frac{L}{week}$

Convert L per week to bottles per week

$(\frac{84}{5} \frac{L}{week}) / (\frac{7}{5} \frac{L}{bottle}) = (\frac{84}{5} \frac{L}{week}) * (\frac{5}{7} \frac{bottle}{L}) = \frac{84*5}{5*7} \frac{bottle}{week}$

= 12 bottles per week