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>

dsuc.created: 7 years ago | dsuc.updated: 1 week ago

dsuc.updated: 1 week ago

None of these

Mercantile Bank Ltd Mercantile Bank Ltd - Officer - 2006 গণিত

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common.best_ans:

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

7 years ago

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Md Azizur Rahman

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