Question

Of the total number of people on a cruise ship, 1/4 or child passengers. 2/5 of the remaining people were crew. There were 1320 crew on board how many adult passengers were there

Answer 1

462

Step-by-step explanation:

       Total number of people on the cruise ship was 1320.

$\frac{1}{4}^{th}$ of the people were child passengers. Number of child passengers = $\dfrac{1}{4}\times (\text{Total number of people})=\dfrac{1}{4}\times 1320=330$

$\frac{2}{5}^{th}$ of the people were crew. Number of people that were crew = $\dfrac{2}{5}\times (\text{Total number of people})=\dfrac{2}{5}\times 1320=528$

       Remaining people in the ship constitute the adult passengers.

       Number of adult passengers = $(\textbf{Total number of people})-(\textbf{Total number of children})-(\textbf{Total number of crew})=1320-330-528=\textbf{462}$

∴ Number of adult passengers = 462