In a room, all except 18 of the people are over 50 years of age. 15 of the people in the room are under 50 years of age. If 10% of the people are at the age of 50 years, how many people are in the room>
Created: 6 years ago |
Updated: 2 years ago
best des
let,
Total number of people = x
50 years of age = x - 18
Under 15 years of age = 15
0.10x = x - x + 18 - 15
∴x = 30
ans: 30
Md Azizur Rahman
Founder of Satt
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