Mrs. McRae bought her sister's dog a leash and coat. The coat costs three times as much as the leash. She paid $16. How much did she pay for the coat? Mrs. McRae bought her sister's dog a leash and coat. The coat costs three times as much as the leash. She paid $16. How much did she pay for the coat? @Mathematics

Question

Mrs. McRae bought her sister's dog a leash and coat. The coat costs three times as much as the leash. She paid $16. How much did she pay for the coat?  Mrs. McRae bought her sister's dog a leash and coat. The coat costs three times as much as the leash. She paid $16. How much did she pay for the coat?  @Mathematics

anonymous · Answer

remember, 2 unknowns so u need 2 equations

leash + coat = 16
coat = 3*leash

so,
leash + 3*leash = 16
4*leash = 16

so,
leash = $4
coat = 3*leash = 3*4 = $12