Question

Tania has a collection of 307 marbles. She wants to put them in jars. If she can put 12 marbles in one jar, how many jars are required to put all the marbles?

• A. 26
• B. 25
• C. 30
• D. 20

Answer 1

The correct option is A 26

Total number of marbles = 307
Number of marbles in each jar = 12
To find out the number of shelves needed let's divide 307 by 12.

$$\begin{array}{c}25\\ 12307\\ -\underset{–}{24}2\\ 67\\ -\underset{–}{60}\\ 7\end{array}$$Thus, we have a quotient of 25 and a remainder of 7.

$\therefore$ We need 25 + 1 = 26 jars to put all the marbles and the last jar will have only 7 marbles.