Question

Robbie earns a monthly income of $\$$500. He donates 10% of this income to charity. Of the remaining income, he spends 40% on food and fuel and saves the rest in his bank account. Find Robbie's savings for the month.

• A. $\$$370
• B. $\$$300
• C. $\$$250
• D. $\$$270

Answer 1

The correct option is D $\$$270

Robbie's income = $\$$500
Percentage of income donated to charity = 10%
Amount donated = 10% of $\$$500
i.e., $\frac{10}{100}$ × 500 = $\$$50

Remaining amount = $\$$ (500 – 50) = $\$$450

Percentage of remaining income spent on food and fuel = 40%
Amount spent on food and fuel = 40% of $\$$450
i.e., $\frac{40}{100}$ × 450 = $\$$180

Remaining amount = $\$$ (450 – 180) = $\$$270

Thus, Robbie saves $\$$270.