Step-by-step explanation:
Lyndsey made $3 for each box of cookies sold, and she sold 4 boxes on Monday and 6 boxes on Tuesday.
The total amount she earned from selling cookies is:
Monday's earnings = $3 per box * 4 boxes = $12
Tuesday's earnings = $3 per box * 6 boxes = $18
Her total earnings from selling cookies = $12 + $18 = $30
To reach her goal of $50, she still needs to earn:
Remaining amount = Goal amount - Total earnings from selling cookies
Remaining amount = $50 - $30 = $20
Therefore, Lyndsey still needs to earn $20 more to go on her Girl Scout trip.
