Question

There are 9 more children than parents in a room. There are 25 people in the room in all. How many children are there in the room?" Let c represent the number of children. Which expression represents the number of parents?

a) c⋅9
b) c + 9
c) c−9
d) 9−c

Answer 1

To find the expression representing the number of parents, subtract 9 from the number of children as there are 9 more children than parents in the room. The correct expression is c - 9.

Step-by-step explanation:

To solve the problem in which there are 9 more children than parents in a room and there are 25 people in total, you can set up an equation. Let c represent the number of children. Then, the number of parents would be c minus 9. Since the total number of people is 25, you have the equation c + (c - 9) = 25. Solving this equation will give you the number of children and the number of parents in the room.

To find the expression that represents the number of parents given c, you can simply subtract 9 from c, which gives you option c) c−9. This is because there are 9 more children than parents, so subtracting 9 from the total number of children will give you the total number of parents.