In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?
In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?
A36
B24
C28
D40
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Correct answer is:36
Explanation:
Total Ration = x
Consumption of Each student for 20 days \(= \frac{x}{180}\)
Consumption of Each student for Per day \(= \frac{x}{180 \times 20}\)
\(\therefore\) Consumption of Each student for Per day \(= \frac{x}{3600}\)
Now we want ration to continue for 25 days.
Total of number of students be y for 25 days consumption.
\(\frac{x}{3600} \times y \times 25 = x\)
\(y = \frac{3600}{25} = 144\)
So total number of students to leave = 180 - 144 = 36
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