Question

Amy and Jessie collect stamps. The ratio of stamps collected by Amy and Jessie is 5:7. Together, they have 48 stamps. How many more stamps does Jessie have than Amy?

• A. $10$
• B. $6$
• C. $12$
• D. $8$

Answer 1

The correct option is D $8$

Ratio $5:7$

tape diagram:
There are 12 rectangles in the Tape Diagram. Each rectangle will represent the same number of stamps.
There is a total of 48 stamps. So, each rectangle will represent $\frac{48}{12}=4$ stamps
From the tape diagram,
Amy has 5 rectangles, so Amy will have $5\times 4=20$ stamps.
Jessie has 7 rectangles, so Jessie will have $7\times 4=28$ stamps
So, Jessie will have $28-20=8$ more stamps than Amy.