How Many Years Old Is a Fossil in Which the Ratio

Short Answer

How many years old is a fossil in which the ratio of ${ } ^ { 14 } \mathrm { C }$ to ${ } ^ { 12 } \mathrm { C }$ is $\frac { 1 } { 7 }$ the ratio found in the atmosphere? The half-life of ${ } ^ { 14 } \mathrm { C }$ is 5,730 years. Round to the nearest whole year.