Fifty.
When he went to spend 40 days on mount Sinai.
Moses Malone
The questionis not clear, yes Moses was on mount Sinai for 40 days with God.
Moses spent 40 days on the mount Sinai , and what he ate and drank there is not mentioned.
Moses was away for 40 days and 40 nights receiving the 10 Commandments from God on Mount Sinai.
Moses was on mount Sinai for 40 days till god told him to go down.and see what the people were doing.
40 days and nights
Moses only talked and listened to god, for 40 days , but he did not see him face to face.
When Moses was on Mount Sinai for40 days, the people got restless and melted their gold andbuilt a golden calf.
When Moses came down from mount Sinai , he was very angry with the people, he then threw the two tablets of stone and it broke.
Moses spent a total of 40 days and 40 nights on top of Mount Sinai talking and hearing God.
Moses fasted forty days and forty nights on Mt. Sinai.