Question

Question 67

In a camp, there is enough flour for 300 persons for 42 days. How long will the flour last, if 20 more persons join the camp?

Answer 1

$\because$ For 300 persons flour is enough for 42 days.
$\therefore$ For 1 person flour is enough for $=300\times 42=12600days$

Now, 20 more persons join the camp.
So, the total number of persons = 300+20 = 320

$\therefore$ For 320 persons flour is enough for
$\frac{12600}{320}=39\frac{3}{8}days$