17. There are two groups of students. There are** x **students in the first group and each student came make** m** cakes in an hour. There are **y** students in the first group and each student came make **n** cakes in an hour. How many cakes can each student make among the two groups?

Guest Nov 30, 2017

#1**+1 **

In total group 1 makes xm cakes per hour

In total group 2 makes yn cakes per hour

so altogether they make (xm+yn) cakes per hour,

On average this is (xm+yn)/(x+y) cakes per student per hour.

I think that is what the question is asking for but the working is not very clear....

Melody Nov 30, 2017