Question

School is holding a writing contest for students from $1^{st}$ grade to $5^{th}$ grade. $3$ students should participate from each grade. If each student brings two pens, two pencils, one eraser, and one sharpener. How many implements will we see at the competition?

• A. $100$
• B. $120$
• C. $80$

Answer 1

The correct option is B $120$

Number of participating grades = $5$

Number of students from each grade = $3$

Number of implements per student = $2+2+1+1=6$

So, the total number of implements = $5\times 3\times 6$

Using associative property of multiplication:

$5\times 3\times 6=(5\times 3)\times 6=15\times 6=120$

Hence, we see 120 implements in the test.