Question

A problem states: "There are 7 more girls than boys in a class. There are 23 students in the class in all. How many girls are there in the class?" What are the unknowns in this problem?

A. the number of boys and the number of girls in the class
B. the number of boys in the class
C. the number of students in the class
D. the number of girls in the class

Answer 1

The unknowns in this problem are A. The number of boys and the number of girls in the class.

We know there are 7 more girls than boys, but because we don't know how many boys there are, we don't know how many girls there are.