Question

30 Pupils planned to bake 4 cookies to give to every pupil in the level. 5 more pupils decided to join them and so each of the rest of the pupils baked 2 fewer cookies than planned at first. How many pupils were there on the level? a) 35

b) 40
c) 45
d) 50

Answer 1

There were 50 pupils in the level. The correct answer is d) 50.

Step-by-step explanation:

To solve this problem, let's first determine how many cookies were planned to be baked in total. We know that there were initially 30 pupils, and each planned to bake 4 cookies. So, the total number of cookies planned would be 30 x 4 = 120 cookies.

Now, 5 more pupils decided to join, making the total number of pupils 30 + 5 = 35 pupils. However, each of the original 30 pupils baked 2 fewer cookies, so they baked 4 - 2 = 2 cookies each.

The additional 5 pupils also baked 2 cookies each because they joined later. Therefore, the total number of cookies baked would be 30 x 2 + 5 x 2 = 60 cookies.

To find the number of pupils in the level, we divide the total number of cookies baked by the number of cookies each pupil received, which is 60 / 4 = 15 pupils. Therefore, there were a total of 30 + 5 + 15 = 50 pupils in the level.