Bobbys collection of sports cards has 3/10 baseball cards and 39/100 football cards the rest are soccer cards what fraction of bobbys sports cards are baseball or football cards

Respuesta :

69/100 are baseball or football cards
6.9 out of  10 or 69/100 since 30 plus 39 equals 69. 
The remianing is 3.1/10 or 31/100