Five less than three times the number of Doberman puppies plus the difference between the number of Doberman puppies and the number of Schnauzers is equal to 90. If the number of Doberman puppies is 20, how many Schnauzers are there?
How many Doberman puppies are there? ** Three times the number of Doberman puppies is 3*20=<<3*20=60>>60
How many Doberman puppies are there? ** Five less than three times the number of Doberman puppies is 60-5=<<60-5=55>>55
Define a variable ** Let's say the number of Schnauzers is s.
What is the difference between the number of Doberman puppies and the number of Schnauzers? ** The difference between the number of Doberman puppies and the number of Schnauzers is s-20
Write an equation ** Five less than three times the number of Doberman puppies plus the difference between the number of Doberman puppies and the number of Schnauzers is equal to 90, meaning 55+s-20=90.
How many Schnauzers are there? ** The number of Schnauzers which is s+55-20=90
Simplify ** This evaluates to s+35=90
Simplify ** There are s=<<55=55>>55 Schnauzers
#### 55