Question

Julia bought $4$ water bottles for $\$7$. If she wants to buy $16$ water bottles, how much money will she have to pay?

• A. $\$28$
• B. $\$70$
• C. $\$64$
• D. $\$35$

Answer 1

The correct option is A $\$28$

The ratio of water bottles to the money spent is $4:7$.

Drawing the tape diagram,

Now, $16$ water bottles have to be adjusted in $4$ rectangles.

Therefore, each rectangle will represent $\frac{16}{4}=4$ water bottles.

The rectangles used to represent the money spent will also have $4$ dollars in each rectangle. Also, the total number of rectangles are $7$.

Therefore, the total money spent is $4\times 7=\$28$.