Find the number of students who like both peanut butter and jam. *
A group of 30 students were asked about their favourite topping for toast.
18 liked peanut butter (A)
10 liked jam (B)
6 liked neither

4 students

Step-by-step explanation:

As shown in the diagram, let U=[The total number of students questioned]

A=[Those who liked peanut butter ]

B=[Those who liked jam ]

x = those who like both peanut butter and jam.

Also 6 liked neither peanut butter nor jam.

From the diagram we can write the mathematical equation as follow and solve for x

We add x and subtract 30 to both sides.

Therefore 4 students like both peanut butter and jam.

4400

step-by-step explanation: