Broody spent $260 on 4 chairs. To find out how much he spent on each chair, he did the following work in long division. did he do the problem correctly why or why not

Can anyone explain to me how to do this? anything will .

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?

Idon't want to fail summer school.the probabilities of contamination in medicine capsules due to the presence of heavy metals and different types of microbes are given in the table.the probability of capsule b having microbial contamination is (the same as, greater than, less than) the probability of capsule d having it.