Question

There were \[50\] people at the birthday party. John invited \[125\] people. Among those who attended, only \[36\% \] brought gifts. How many guests brought gifts?
a) \[125\] people
b) \[50\] people
c)\[18\] people
d) \[32\] people

Answer 1

Hint: Each person brought one gift only, so there will be one gift per person. Therefore, we have to just calculate the value of the given percentage of the number of persons who attended the birthday party. Here all attendees do not bring the gifts but there the percentage of the person who brings the gifts is given so we use the concept of percentage.

Complete step-by-step solution:
Total invitation given by john = \[125\] people
Total people attended the party = \[50\] people
Since there are only \[50\] people present in the party, therefore it is not possible that \[125\] people brought gifts
Hence, option (a) is incorrect
Option b) \[50\] people
Explanation:
According to the question,
Total people attended the party = \[50\] people
And it is given that only \[36\% \] of the people attending the party brought gifts.
Hence, it is not possible that all the attendees brought gift
Therefore, option (b) is also incorrect
Option c) \[18\]people
Explanation:
According to the question,
Total people attended the party =\[50\] people
And it is given that only \[36\% \] of the people attending the party brought gifts.
 \[36\% \] Of the total people attended the party = \[50 \times \dfrac{{36}}{{100}}\] people = \[18\] people
Hence, only \[18\] people from all the \[50\] attendees brought the gift.
Therefore, option (c) is correct.
Option d) \[32\] people
Explanation: \[32\] people are those people who do not bring gifts to the party. But we have to find the number of people who brought gifts to the party.
Hence, option (d) is also incorrect.

Note: If we have to find the total number of people who did not bring gifts in the party then we have to subtract the number of people who brought gifts from total attendees. Hence, only \[18\] people from all the \[50\] attendees brought the gift