Respuesta :

Answer:

$63

Step-by-step explanation:

School week is 5 days.

5 x 4 = 20.

Therefore in a month Juan buys 20 lunches.

20 x 3.15 = 63

Monthly expense is $63

Answer:

63

Step-by-step explanation:

5 × 4 = 20

5 meaning the days in the weeks

4 meaning the number of weeks

20 × 3.15 = 63

3.15 meaning the amount of dollars she spends on lunch each day.