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This problem trains for: Math Kangaroo 5-6, Math Kangaroo 7-8, SAT-I, CAHSEE, AMC-8.
In 1855, when David Livingstone discovered the Victoria Falls, he was 42 years old. His contemporary, Henry Stanley, a future explorer and journalist, was only 14 years old at the time. The two met in an historic meeting in 1871, when Stanley managed to locate Livingstone who was presumed lost or dead. Approximately how much percent older was Livingstone than Stanley at the time of the meeting?
In 1871 Livingstone was:
years old. Stanley was:
Livingstone was older than Stanley by x percent: