Question
The average number of stamps Ivan and Warren had was 122. The average number of stamps Ivan and Ken was 66.5. Given that the ratio of the number of stamps Warren had to the number of stamps Ken had was 5 : 2, find the number of stamps Ivan had.
4 m

Click button first when a symbol is required. X

The average number of stamps Ivan and Warren had was 122. The average number of stamps Ivan and Ken was 66.5. Given that the ratio of the number of stamps Warren had to the number of stamps Ken had was 5 : 2, find the number of stamps Ivan had.