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80 students of a hostel have food enough for 40 days. If 20 more students join the hostel after 10 days, how long will the remaining food last?
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80 students of a hostel have food enough for 40 days. If 20 more students join the hostel after 10 days, how long will the remaining food last?
Answer
<p>Ok, so if we break this question down into meals it would mean that at the beginning the hostel has enough meals for 80 students for 40 days.</p> <p>80 x 40 = 3200 meals</p> <p>If we then assumed that after 10 days these new students came along then how many meals would be left when they arrive:</p> <p>80 x 10 = 800 meals eaten</p> <p>3200 - 800 = 2400 meals left</p> <p>Therefore in order to find out how long the remaining food will last we just need to divide the meals left by the new number of students:</p> <p>80 + 20 = 100 students</p> <p>2400 / 100 =<strong> 24 days</strong></p>
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