Question

Chelsy spends $40$% of her monthly earnings on rent and $10$% of the remaining amount on entertainment. If she spends 800$ for rent, how much does she use for entertainment?

• A. 120$
• B. 180$
• C. 200$
• D. 800$
• E. 2,000$

Answer 1

The correct option is A 120$

The salary of chelsy be $n$.
Amount spent on rent is $\frac{40}{100}\times n=\frac{4n}{10}=800$, which implies $n=2000$
Remaining amount is $2000-800=1200$
$10$ percent of remaining amount is $\frac{1}{10}\times 1200=120$