33km total / 3 hours total = 11 km/hr average
Yes to both, and for future help, if you find a common denominator(the bottom one) by multiplication and one is higher, boom you have your answer.
so since only 3 out of 11 went to visit then it is simple
since just 3 went and there were 11
3/11 of the students went
1. In a week there are 7 days. So your andwer would be 21/10. The decimal is 2.1.