Try the following GMAT Problem Solving question that tests your understanding of percent changes and ratios.

**Question 29**:

If $a$ is $40\%$ less than $b$ and $b$ is $25\%$ more than $c$, then what is the ratio of $c$ to $a$?

- $\quad 3 \; \textrm{to} \; 4$
- $\quad 3 \; \textrm{to} \; 5$
- $\quad 4 \; \textrm{to} \; 3$
- $\quad 5 \; \textrm{to} \; 3$
- $\quad 2 \; \textrm{to} \; 1$

**Video Explanation**

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