Question

a girl bought a dog for $5 sold it for $10 bought it back for $20 and sold it for $25 how much $ did she gain or lose

Answer 1

the girl gained $10 in total because -5+10-15+20-25=10

Answer 2

Lost: -5, -20 = -25

Gained: +10, +25 = 35

35 - 25 = 10
So she made $10 profit