Question

Vanessa and Naomi each can earn $12 a day walking dogs. If Vanessa starts with $25 and Naomi starts with $14, and they both work every day, in how many days will their combined earnings total $159

Answer 1

`25 + 12x + 14 + 12x = 159 \\ 39 + 24x = 159 \\ 24x = 120 \\ x = 5`

they will earn a combined $ 159 in 5 days