Question

Lara's puppy weighs 3.5 pounds and will gain approximately 0.5 pounds per
month.
Monica's puppy weighs 2 pounds and will gain 1 pound per month.
After how many months will both puppies weigh the same amount?

Answer 1

3 months

We can use a systems of equations to find when the values will equal each other, with x equal to months

Lara's Puppy: 0.5x+3.5

Monica's Puppy: x+2

Now create an equation for these puppy's weights to equal each other, and solve:

0.5x+3.5=x+2

0.5x=1.5

x=3