Carly is a pet groomer. Today, her task was trimming the four nails on dogs’ paws. She trimmed 164 nails, but three of the dogs had only three legs. How many dogs did Carly work on?
Карли як парвариши ҳайвонҳо мебошад. Имрӯз, вазифаи ӯ буридани чор нӯги нохунҳои пойи сагҳо буд. Вай 164 нохунро бурид, аммо се саг танҳо се пой доштанд. Карли бо чанд саг кор кард?
Define a variable ** Let N be the number of dogs with 4 legs Carly worked on.
How many paws did the dogs with 4 legs have? ** All the dogs with 4 legs had 4N paws.
How many paws did the dogs with 3 legs have? ** There were 3 * 3 = <<3*3=9>>9 paws on dogs with 3 legs.
How many paws did Carly trim? ** At 4 nails per paw, she trimmed 164 / 4 = <<164/4=41>>41 paws.
How many paws did Carly work on? ** She worked on 4N + 9 = 41 paws.
How many paws did Carly work on? ** Thus, she worked on 4N = 32 paws on dogs with 4 legs.
How many dogs did Carly work on? ** She worked on N = 32 / 4 = <<32/4=8>>8 dogs with 4 legs.
How many dogs did Carly work on? ** Thus, Carly worked on 8 + 3 = <<8+3=11>>11 dogs.
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Таъриф кунед, ки ** Пути N шумораи сагон бо 4 пои Карли буд. 
Сагон бо 4 пои чанд пои доштанд? ** Ҳамаи сагон бо 4 пои 4N пои доштанд. 
Сагон бо 3 пои чанд пои доштанд? ** 3 * 3 = <<3*3=9>>9 пои дар сагон бо 3 пои буд. 
Карли чанд пои бурид? ** Бо 4 нок дар ҳар по, ӯ 164 / 4 = <<164/4=41>>41 пои бурид. 
Карли чанд пои кор кард? ** Ӯ 4N + 9 = 41 пои кор кард. 
Карли чанд пои кор кард? ** Аз ин рӯ, ӯ 4N = 32 пои дар сагон бо 4 пои кор кард. 
Карли чанд сагон кор кард? ** Ӯ N = 32 / 4 = <<32/4=8>>8 сагон бо 4 пои кор кард. 
Карли чанд сагон кор кард? ** Аз ин рӯ, Карли 8 + 3 = <<8+3=11>>11 сагон кор кард. 
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