A school has enough bread to feed 30 children for 4 days. If 10 more

Question

A school has enough bread to feed 30 children for 4 days. If 10 more children are added, how many days will the bread last?

(A) 4/3

(B) 8/3

(C) 3

(D) 16/3

(E) 12

pushpitkc · Answer

If every child in the school eats 1 bread a day and there is enough bread 
to feed 30 children for 4 days, the school must have 30*4 = 120 bread.

Since 10 more children are added to the school, the number of children must be 40.

Therefore, the time for which the bread lasts is  \frac{120}{40} = 3  days (Option C)

rishabhmishra · Answer

IMO C  I will solve this question by table method which is as following:-
 If you like my explanation then please give me  Kudos  Thanks in advance

MathRevolution · Answer

Let each student eats 1 bread a day. Therefore, 30 students for 4 days will eat: 30 * 4 = 120 breads

=> Now if 10 more children are added: 30 + 10 = 40.

=> 120 bread will last for  \frac{120 }{ 40}  = 3 days.

Answer C

Basshead · Answer

amount = rate * time

30 * 4 = 120 rations of bread.

If 10 more students are added: 30 + 10 = 40 students

120 / 40 =  3 days .

Kimberly77 · Answer

Great explanation  Basshead 
Quick question why is below method wrong? Where's my thinking gone wrong?
Could you kindly help clarify? Thanks

30/4 = 40/x
x = 16/3

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