Question

In a class of 90 students, amongst 50% of the students, each student got number of sweets that are 20% of the total number of students and amongst the remaining 50% of the students, each students got number of sweets that are 10% of the total number of students. how many sweets were distributed among 90 students

Answer 1

$\frac{50}{100} \times 90$
45 students
$\frac{20}{100} \times 90$
18 sweets
45 students got 18 sweets
$\frac{10}{100} \times 90$
9 sweets
total sweets=(45×18)+(45×9)
=810+405
=1215
each student got=16.5

Answer 2

Answer:

Number of sweet  were distributed among 90 students are 1215.

Step-by-step explanation:

Given : In a class of 90 students, among st 50% of the students, each student got number of sweets that are 20% of the total number of students and among st the remaining 50% of the students, each students got number of sweets that are 10% of the total number of students.

To find : How many sweets were distributed among 90 students?

Solution :

50% students among 90 students

i.e, 50% of 90

$\frac{50}{100}\times 90=45$

45 students

20% sweets among 90 students

i.e, 20% of 90

$\frac{20}{100}\times 90=18$

18 sweets

Which means, 45 students got 18 sweets

Now, Each students got number of sweets that are 10% of the total number of students.

i.e, i.e, 10% of 90

$\frac{10}{100}\times 90=9$

9 sweets

So, The total number of sweets are

$T=(45\times18)+(45\times9)$

$T=810+405$

$T=1215$

Number of sweet  were distributed among 90 students are 1215.